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TIL: How to Transform Mars into Our Second Home | Today I Learned

Video vocabulary

for

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US / fə(r) /

UK / fɔr,fə /

A1
  • preposition
  • Used to show the purpose, or need of something

ray

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US / reɪ /

UK / re /

B1
  • noun
  • Person's name
  • Lines of light coming from an object
  • Fish with a pointed tail and flat body

time

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US / taɪm /

UK / taɪm /

A1
  • noun
  • Speed at which music is played; tempo
  • Point as shown on a clock, e.g. 3 p.m
  • Number of hours, minutes needed to do something
  • Occasion when something happens
  • Period or occasion that something occurred
  • Period in history or the past
  • Something measured in minutes, hours, days, etc.
  • How long an event takes; duration
  • verb
  • To check speed at which music is performed
  • To choose a specific moment to do something
  • To measure how long an event takes, e.g. a race
  • To schedule something to occur at a specific moment

solid

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US / 'sɒlɪd /

UK / ˈsɑlɪd /

A2
  • adjecitve
  • Being able to be trusted; reliable
  • Substance that is hard or of fixed shape
  • Being well made and expected to last long
  • Having no space or emptiness inside
  • Being made entirely of one material or substance
  • noun
  • Something firm or hard; not gas or liquid

wind

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US / wɪnd /

UK / wɪnd /

A1
  • adjecitve
  • (Musical instruments) that you blow into to play
  • noun
  • A current of air moving approximately horizontally, especially one strong enough to be felt
  • Something that has influence
  • verb
  • If a road, path, or river winds, it follows a route that turns repeatedly in different directions
  • To turn or cause something to turn
  • To twist around something

anyway

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US / ˈeniweɪ /

UK / ˈɛniˌwe /

A1
  • adverb
  • A word used to change the topic of a conversation

chlorofluorocarbon

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US / ˌklɔ:rəʊˈflʊərəʊkɑ:bən /

UK / ˌklɔ:roʊˈflʊroʊkɑ:rbən /

A1
  • noun
  • Fluorocarbon with chlorine

period

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US / ˈpɪəriəd /

UK / ˈpɪriəd /

A1
  • noun
  • Set amount of time during which events take place
  • A way to emphasize what you will say
  • A full stop (.), marking the end of a sentence
  • A menstrual cycle
  • A set time for a class to be held

send

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US / send /

UK / sɛnd /

A1
  • verb
  • To cause to behave or respond in a particular way
  • To cause mail or packages to go to another place
  • To move something quickly in a particular way
  • To give information or greetings to someone

charge

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US / tʃɑ:dʒ /

UK / tʃɑrdʒ /

A2
  • noun
  • An attack by running quickly toward someone
  • A price for a service or goods
  • When a battery has a certain amount of electricity
  • Amount of money you pay for a service
  • verb
  • To run quickly toward someone to attack them
  • To ask for money as a price for a service or goods
  • To put electricity in a battery
  • To give responsibility to take care of or manage
  • To state that someone has committed a crime

warm

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US / wɔ:m /

UK / wɔrm /

A1
  • adjecitve
  • Friendly, sincere and kind to others
  • Being friendly or sincere
  • Slightly hot; not very hot
  • verb
  • To become more friendly or to like something
  • To make something hotter

hemisphere

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US / ˈhemɪsfɪə(r) /

UK / ˈhɛmɪˌsfɪr /

B2
  • noun
  • One half of a rounded, ball-like object
  • One of the two masses forming the brain

start

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US / stɑ:t /

UK / stɑrt /

A1
  • noun
  • First time or place that a thing exists; beginning
  • First opportunity to achieve something, e.g. a job
  • Sudden action or movement because you are scared
  • other
  • Beginning of something in place or time
  • verb
  • To do, be or happen for the first time; begin
  • To turn something on

well

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US / wel /

UK / wɛl /

A1
  • adjecitve
  • Being in a fortunate, good condition or state
  • Healthy and in good condition
  • adverb
  • In an acceptable, proper, or successful manner
  • In a complete, total, or full manner
  • A great and considerable degree
  • In a successful way, in a good or satisfactory way
  • exclamation
  • Used to begin or continue a particular statement
  • Used to show you want to start saying something
  • Used to express that you are waiting for a reply
  • You say this to change the topic of a conversation
  • Used to indicate you are making a final remark
  • noun
  • Long deep hole in the ground to get water
  • verb
  • To cause your eyes to fill with tears

wonder

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US / 'wʌndə(r) /

UK / ˈwʌndɚ /

A1
  • noun
  • Surprise caused by experiencing something amazing
  • verb
  • To feel curious about something
  • To think or consider about something over time

generation

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US / ˌdʒenəˈreɪʃn /

UK / ˌdʒɛnəˈreʃən /

A2
  • noun
  • Act or process of producing or causing something
  • People born and living at about the same time

molecule

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US / ˈmɒlɪkju:l /

UK / ˈmɑlɪˌkjul /

B2
  • noun
  • Two or more atoms chemically combined

those

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US / ðəʊz /

UK / ðoz /

A1
  • determiner
  • The people or things we are talking about
  • pronoun
  • The objects far from the speaker

earth

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US / ɜ:θ /

UK / ɚθ /

A1
  • noun
  • Wire connecting an electrical device to the ground
  • The planet we live on
  • Soil in which we grow plants

ocean

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US / 'əʊʃn /

UK / ˈoʃən /

A2
  • noun
  • Large body of salt water; a large sea

same

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US / seɪm /

UK / sem /

A1
  • adjecitve
  • Being equal in quality and amount
  • Identical; not different
  • Not changing; constant

can

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US / kæn /

UK / kən,kæn /

A1
  • noun
  • A metal container for storing food
  • other
  • Able to; have the skill to; have the time to
  • verb
  • To have permission to
  • To be possible to do
  • To preserve food by sealing it in a metal container

breathe

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US / bri:ð /

UK / brið /

A2
  • verb
  • To move air into and out of your lungs
  • To say something very softly
  • To stop moving so one can rest

drastically

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US / 'drɑ:stɪklɪ /

UK / ˈdræstɪkl:ɪ /

B2
  • adverb
  • In a sudden, extreme or severe manner

pole

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US / pəʊl /

UK / pol /

B1
  • noun
  • One of two opposite ideas, qualities or positions
  • Most northern or most southern point on a planet
  • A long, narrow piece of metal or wood
  • One of two opposite magnetic forces
  • An upright long thin structure to support things
  • verb
  • To move a boat with a stick or pole

really

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US / ˈri:əli /

UK / ˈriəˌli, ˈrili /

A1
  • adverb
  • Used to stress something that is said; definitely
  • In a true or accurate manner
  • Very

would

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US / wʊd /

UK / wʊd /

A1
  • other
  • Used to indicate something imagined
  • Used to ask or request something politely
  • Verb used to indicate possibility, request etc.
  • Used to indicate a preference
  • Used to indicate a reaction
  • Indicates something that occurred repeatedly
  • Used to indicate willingness or ability to do

effect

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US / ɪ'fekt /

UK / ɪˈfɛkt /

A1
  • noun
  • An advantage, benefit
  • Change brought about by a cause; result

freeze

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US / fri:z /

UK / friz /

A2
  • noun
  • Sudden stop to prevent increase or decreases
  • Period of very cold weather under zero degrees
  • verb
  • To harden to a solid below zero degrees
  • To store an item of food in a cold place
  • To make someone to not want to communicate
  • To stop moving and be still; stay the same

not

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US / nɒt /

UK / nɑt /

A1
  • adverb
  • Word indicating the negative
  • (Used to form the negative of verbs)

our

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US / 'aʊə(r) /

UK / aʊr /

A1
  • determiner
  • Belonging to us

whole

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US / həul /

UK / hol /

A1
  • adjecitve
  • Complete or full; all of
  • Being in a good condition
  • noun
  • Complete amount or sum; total

want

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US / wɔnt /

UK / wɑnt, wɔnt /

A1
  • noun
  • Something you desire or wish for
  • State or condition of poverty
  • verb
  • To desire or wish for something; hope for a thing

cfc

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US / ˌsiː ef ˈsiː /

UK / ˌsiː ef ˈsiː /

A1
  • abbreviation
  • CFC is an acronym

but

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US / bət /

UK / bʌt,bət /

A1
  • conjunction
  • Used before you say something different, opposite

good

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US / ɡʊd /

UK / ɡʊd /

A1
  • adjecitve
  • Proper, appropriate or right
  • (Of an amount) enough; plenty
  • Excellent; high quality
  • Acting well or properly; of moral character
  • In a positive or happy emotional state
  • noun
  • Advantage or benefit

now

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US / naʊ /

UK / naʊ /

A1
  • adverb
  • At the present time or moment
  • Right away or in the next possible moment
  • Used to refer to something that just happened
  • Time between the present and a moment in the past
  • conjunction
  • Resulting from or because of something

magnetic

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US / mægˈnetɪk /

UK / mæɡˈnɛtɪk /

B2
  • adjecitve
  • Having the properties of a magnet; able to attract
  • Being able to attract
  • Having great power to attract attention, interest

planet

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US / 'plænɪt /

UK / ˈplænɪt /

A2
  • noun
  • One of the bodies that orbit the sun

comet

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US / ˈkɒmɪt /

UK / ˈkɑ:mət /

B2
  • noun
  • Moving object in space, with a long, bright tail

giant

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US / 'dʒaɪənt /

UK / ˈdʒaɪənt /

A2
  • adjecitve
  • Very large, or much bigger than other things
  • noun
  • Tall, large, and powerful human-like creatures
  • Very successful, powerful person or organization

less

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US / les /

UK / lɛs /

A1
  • adjecitve
  • Smaller in amount or degree
  • adverb
  • To a smaller degree
  • noun
  • A smaller amount
  • preposition
  • With the subtraction of

entire

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US / ɪn'taɪə(r) /

UK / ɛnˈtaɪr /

A2
  • adjecitve
  • Complete or full; with no part left out; whole

into

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US / 'ɪntə /

UK / ˈɪntu /

A1
  • preposition
  • Moving or going inside something
  • In the same direction as; in the direction of
  • So as to become; taking the state of

mar

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US / mɑ:(r) /

UK / mɑ:r /

A1
  • noun
  • 3rd month of the year
  • verb
  • To spoil the appearance/atmosphere of something

one

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US / wʌn /

UK / wʌn /

A1
  • pronoun
  • You; we; people in general; someone
  • The thing or person previously referred to
  • adjecitve
  • Used to refer to people generally
  • Being a strong example of (something mentioned)
  • number
  • Number 1

than

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US / ðən /

UK / ðən /

A1
  • conjunction
  • Used to compare two things that are not equal

turn

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US / tɜ:n /

UK / tɚn /

A1
  • noun
  • Place where changing of direction happens
  • Your time or chance to perform a duty
  • Your chance to play or do in say a game
  • Unexpected change, as in the weather
  • verb
  • To become (a particular age)
  • To become a different quality, color, etc.
  • To change the direction of something, e.g. a car
  • To move in an opposite direction or position
  • To shape metal with a spinning tool

bad

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US / bæd /

UK / bæd /

A1
  • adjecitve
  • Not good; wrong
  • Lacking in good morals; evil
  • No longer fresh; spoiled

choke

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US / tʃəʊk /

UK / tʃoʊk /

B2
  • verb
  • To cause someone not to breathe
  • To be unable to breath due to a blockage
  • To fail to perform well, due to stress

surface

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US / 'sɜ:fɪs /

UK / ˈsɚfəs /

A2
  • adjecitve
  • Of the top layer; not deep or meaningful
  • noun
  • Top layer of the ground or of water
  • Nature or emotions that show, but may not be true
  • Outside or upper layer of something
  • verb
  • To give (road) a top layer
  • To appear after being hidden, unseen, or unknown
  • To come to the top of something; emerge
  • To come to the top level of water, mud, etc.

big

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US / bɪɡ /

UK / bɪɡ /

A1
  • adjecitve
  • Popular
  • Serious
  • Large

little

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US / 'lɪtl /

UK / ˈlɪtl /

A1
  • adjecitve
  • Being short in length of time
  • Not great in size, amount, or degree; small
  • Being very young or younger than others
  • adverb
  • By an amount or degree that is not very much
  • Not often; rarely
  • noun
  • A person's name

let

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US / let /

UK / lɛt /

A1
  • verb
  • To allow someone to do something
  • Introducing a suggestion to do something together
  • To rent a house, etc. to others

lid

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US / lɪd /

UK / lɪd /

B1
  • noun
  • Cover that can be lifted or removed, as on bottles

the

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US / ðə /

UK / ðə /

A1
  • article
  • Used to refer to something already mentioned
  • Used to show there is only one of something
  • determiner
  • Used to describe all of a family

wet

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US / wet /

UK / wɛt /

A1
  • adjecitve
  • Concerning a bar that serves or sells alcohol
  • Having or experiencing a great deal of rain
  • Containing water or liquid; not dry
  • verb
  • To accidentally pee in clothes or a bed

this

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US / ðɪs /

UK / ðɪs /

A1
  • adjecitve
  • Used to indicate something already been discussed
  • Used to indicate something happening around now
  • adverb
  • An indication by a physical motion or gesture
  • A specific amount of
  • determiner
  • Person, thing, or idea near you
  • pronoun
  • Person, thing that has already been discussed

astrobiologist

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US / /

UK / /

A1
  • noun

half

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US / hɑ:f /

UK / hæf, hɑf /

A1
  • adjecitve
  • Not complete
  • adverb
  • Partly; somewhat
  • noun
  • One of two equal periods of game time in a sport
  • The part you get when one is divided into two;

plant

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US / plɑ:nt /

UK / plænt /

A2
  • noun
  • Factory or a place where things are made
  • Living thing with leaves and roots growing in soil
  • verb
  • To firmly position something (in the ground)
  • To put seeds, flowers, trees in the ground

strip

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US / strɪp /

UK / strɪp /

B1
  • noun
  • Long narrow piece, such as ribbon or land
  • verb
  • To remove your clothes (often sexily for someone)
  • To remove something, e.g. paint from a wall
  • To take property, dignity away from (someone)

average

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US / 'ævərɪdʒ /

UK / ˈævərɪdʒ, ˈævrɪdʒ /

A2
  • adjecitve
  • Typical or normal; usual; ordinary
  • noun
  • Total of numbers divided by the number of items
  • verb
  • To add numbers then divide by the number of items

make

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US / meɪk /

UK / mek /

A1
  • noun
  • Product made by a particular company; brand
  • verb
  • To arrange or prepare something e.g. dinner
  • To get to (a place) on time
  • To gain the status of (teacher, lawyer, etc.)
  • To create something by putting things together
  • To earn a certain amount of money at a job
  • To cause or force a person to do something
  • To cause something to happen or be formed

pump

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US / pʌmp /

UK / pʌmp /

B1
  • noun
  • A device more moving liquids
  • Light woman's shoe
  • verb
  • To make liquid or gas flow in a particular direction
  • To make water/other liquid move using a machine
  • To move in or out, or up and down quickly
  • asking for information in an indirect way

bowl

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US / bəʊl /

UK / bol /

A2
  • noun
  • Part of an object that has a rounded, inward curve
  • Round container used for holding rice, soup etc.
  • Round Building to watch sports events, concerts
  • Low-lying land with higher ground around it
  • verb
  • To roll a ball in the sport of bowling
  • To throw a ball in a game such as cricket

live

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US / lɪv /

UK / liv /

A1
  • adjecitve
  • Being broadcast as events happen, not recorded
  • Carrying electric current; able to give a shock
  • Glowing because burning; hot
  • Not yet killed (for food)
  • adverb
  • (Music, drama) as it is performed
  • verb
  • To be alive
  • To experience a particular type of life
  • To make your home in a house or town

kind

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US / kaɪnd /

UK / kaɪnd /

A1
  • adjecitve
  • In a caring and helpful manner
  • friendly and considerate
  • noun
  • One type of thing

year

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US / jə: /

UK / jɪr /

A1
  • noun
  • Unit of time equal to 12 months or 365 or 366 days
  • Used to refer to the age of a person

you

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US / jʊ /

UK / ju /

A1
  • pronoun
  • Person someone is speaking or writing to
  • Person or people in general

accomplish

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US / ə'kʌmplɪʃ /

UK / əˈkɑmplɪʃ /

B1
  • verb
  • To succeed in doing; complete successfully

again

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US / ə'ɡen /

UK / əˈɡɛn /

A1
  • adverb
  • One more time, once more

about

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US / ə'baʊt /

UK / əˈbaʊt /

A1
  • adverb
  • To be ready to; going to
  • Nearly; approximately; roughly
  • Near; next to; close to
  • In every direction; in the area of
  • preposition
  • Concerning or of (a topic)

even

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US / 'i:vn /

UK / ˈivən /

A1
  • adjecitve
  • Being equal in influence, power, possibility etc.
  • Being divided equally or fairly
  • (Of teams/contest) with similar chances of success
  • Smooth, level, or regular
  • Can be divided by 2; ending in 2, 4, 6, 8, or 0
  • At a regular, equally steady manner
  • Remaining steady and unchanging
  • adverb
  • (When this is surprising) as well; too
  • (Used to compare two things/stress the difference)
  • verb
  • To make something level; to flatten
  • To make something equal

like

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US / laɪk /

UK / laɪk /

A1
  • adjecitve
  • Being equal in status or kind to something else
  • Similar; the same
  • adverb
  • For example
  • preposition
  • Used as a filler; used to ad emphasis
  • In a way similar to the way something is done
  • Such as; for example
  • verb
  • To want to
  • To find something pleasing; to prefer something

poison

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US / ˈpɔɪzn /

UK / ˈpɔɪzən /

A2
  • noun
  • Substance that can kill when eaten/drunk
  • verb
  • To affect something in a very negative way
  • To hurt or kill with a dangerous substance

what

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US / wɒt /

UK / hwɑt, hwʌt, wɔt, wʌt,hwət, wət /

A1
  • pronoun
  • Thing or things that; the same kind as
  • Used to emphasize something you are about to say
  • adjecitve
  • Used to refer to a particular amount, or number
  • Used to place emphasis on a particular quality
  • adverb
  • To a certain degree
  • determiner
  • Question words used for asking for information
  • exclamation
  • Used to express excitement, shock, or surprise
  • Used to ask people to repeat something they said

that

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US / ðæt /

UK / ðæt, ðət /

A1
  • adjecitve
  • The person or thing being talked about
  • Used to identify something both the speakers know
  • adverb
  • Used to reinforce adjectives and adverbs
  • To such a degree
  • conjunction
  • Used to connect a noun clause
  • Used to introduce an adverbial clause
  • Used to introduce a noun clause
  • determiner
  • Used as a noun to refer to something
  • pronoun
  • Referring an object far away
  • Used to refer to the relative pronoun ‘which’

fun

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US / fʌn /

UK / fʌn /

A1
  • adjecitve
  • Amusing and enjoyable
  • noun
  • Enjoyable or amusing quality or feeling

right

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US / raɪt /

UK / raɪt /

A1
  • adjecitve
  • Correct or true
  • The south side of you looking at the rising sun
  • adverb
  • Exactly in a place or time
  • Being appropriate for a particular event
  • In a straight or direct manner
  • noun
  • Something you are legally or morally allowed to do
  • Ideal of what is just and good
  • Political view based on conservatism
  • verb
  • To fix something previously wrong or unjust
  • To make upright, as a boat that has turned over

enough

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US / ɪˈnʌf /

UK / ɪˈnʌf /

A1
  • adjecitve
  • Sufficient to answer the need
  • adverb
  • To a satisfactory degree
  • pronoun
  • Equal to what is needed; as much as required
  • Adequate number or amount

factory

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US / ˈfæktri /

UK / ˈfæktəri /

A2
  • noun
  • Building where things are made

mean

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US / mi:n /

UK / min /

A1
  • adjecitve
  • Being good at
  • Nasty; unkind
  • Not liking to spend money; cheap; stingy
  • noun
  • Average of a set of numbers
  • verb
  • To express a particular idea or thought
  • To intend to do something in particular
  • To have a particular meaning or value

oxygen

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US / 'ɒksɪdʒən /

UK / ˈɑksɪdʒən /

B1
  • noun
  • A gas in the air that we need to breathe

first

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US / fɜ:st /

UK / fɚst /

A1
  • adjecitve
  • 1st; Coming before all others in time or place
  • noun
  • Something that has not happened before
  • Position of the winner of a competition

directly

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US / dəˈrektli /

UK / dɪˈrɛktli, daɪ- /

A2
  • adverb
  • In a frank and honest way
  • Right away; immediately

get

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US / ɡet /

UK / ɡɛt /

A1
  • verb
  • To become affected by illness or disease
  • To begin to feel or understand an emotion or idea
  • To send or bring someone or something home, etc.
  • To go somewhere to obtain something
  • To (cause to) do a particular thing
  • To obtain, receive or be given something
  • To currently have
  • To prepare for use
  • To understand something being said or read

glass

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US / ɡlɑ:s /

UK / ɡlæs /

A1
  • adjecitve
  • Being made of glass
  • noun
  • Clear hard container used for drinking
  • A lens for eyewear
  • Hard see-through material used for making windows

thicken

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US / ˈθɪkən /

UK / ˈθɪkən /

B1
  • verb
  • To make something more dense or concentrated
  • To become more complex or difficult to understand
  • To make thicker

bunch

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US / bʌntʃ /

UK / bʌntʃ /

B1
  • noun
  • A group of things of the same kind
  • verb
  • To group people or things closely together
  • (Cloth) to gather/be gathered together in folds

martian

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US / ˈmɑː.ʃən /

UK / ˈmɑːr.ʃən /

A1
  • adjecitve
  • Relating to the planet Mars, or to creatures that are believed to come from Mars
  • noun
  • A creature, usually appearing in films and books, who is believed to come from Mars

solve

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US / sɒlv /

UK / sɑ:lv /

A2
  • verb
  • To figure out a way to handle a difficult problem

tell

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US / tel /

UK / tɛl /

A1
  • verb
  • To (strongly) advise a person to do something
  • To be able to guess
  • To say or communicate information to someone
  • To inform, but without speaking; indicate
  • To have a negative effect on someone
  • To order someone to do something; command
  • To recognize something based on certain signs
  • To report something to an authority
  • To explain something or teach someone something

astronaut

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US / ˈæstrənɔ:t /

UK / ˈæstrəˌnɔt /

B2
  • noun
  • Person who travels in space

emerge

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US / ɪ'mɜ:dʒ /

UK / ɪˈmɚdʒ /

A2
  • verb
  • To rise or appear out of some background

outlaw

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US / ˈaʊtlɔ: /

UK / ˈaʊtˌlɔ /

B2
  • noun
  • Person hiding from police after breaking the law
  • verb
  • To make a practice or thing illegal

cause

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US / kɔ:z /

UK / kɔz /

A2
  • noun
  • Belief, goal or organization that people support
  • Reason for
  • verb
  • To make something happen; create effect or result

own

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US / əʊn /

UK / on /

A1
  • adjecitve
  • Belong to oneself
  • determiner
  • Yours, his, hers, etc.; not belonging to another
  • pronoun
  • (Something) belong to myself
  • verb
  • To have something as your property

science

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US / 'saɪəns /

UK / ˈsaɪəns /

A2
  • noun
  • Study of the physical world, based on facts

explorer

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US / ɪkˈsplɔ:rə(r) /

UK / ɪkˈsplɔrɚ, -ˈsplor- /

A2
  • noun
  • Person who travels to places to discover more them

particle

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US / ˈpɑ:tɪkl /

UK / ˈpɑrtɪkəl /

B1
  • noun
  • Adverb or preposition that joins with a verb
  • Tiny piece or quantity of something

garbage

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US / ˈgɑ:bɪdʒ /

UK / ˈgɑ:rbɪdʒ /

B1
  • noun
  • Waste material that has been thrown out

use

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US / ju:s /

UK / ju:s /

A1
  • noun
  • Ability to employ something
  • Need to enable it to work
  • Permission to do something with something
  • Act of spending money
  • Operation of a machine for its function
  • verb
  • To have; to eat, drink, consume etc.
  • To need to operate or work
  • To operate a machine, e.g. a computer
  • To treat a person badly
  • To do something with, for a task or purpose

carbon

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US / 'kɑ:bən /

UK / ˈkɑrbən /

B1
  • noun
  • Chemical element with an atomic number of 6

too

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US / tu: /

UK / tu /

A1
  • adverb
  • In addition, also; with emphasis
  • Say that something is more than you want

here

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US / hɪə(r) /

UK / hɪr /

A1
  • adverb
  • In this place; at this location, position or time

terraform

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US / ˈterəfɔːm /

UK / ˈterəfɔːrm /

A1
  • transitive verb
  • (especially in science fiction) transform (a planet) so as to resemble the earth, especially so that

thick

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US / θɪk /

UK / θɪk /

A2
  • adjecitve
  • Difficult to see through, as fog
  • Full of (people, etc.)
  • (Of a liquid) that moves or pours slowly
  • Stupid; not smart
  • (Of person's accent) hard to understand
  • Having a large distance between two surfaces

try

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US / traɪ /

UK / traɪ /

A1
  • noun
  • Act of putting the ball over the rugby goal line
  • verb
  • To make an effort, to attempt to do something
  • To examine someone or something in a court of law
  • To test to see if it is good or you like it
  • To make a person go through hardship; test
  • To examine something to see if it works

hurtle

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US / ˈhɜ:tl /

UK / ˈhɜ:rtl /

C1
  • verb
  • To move rapidly or forcefully

will

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US / wɪl /

UK / wɪl /

A1
  • noun
  • Desire or choice of someone
  • Document saying who gets your money when you die
  • Strong desire to do something; determination
  • Desire to do something; strong wish to do
  • other
  • Used with verbs to express the future
  • verb
  • To leave property to someone after your death
  • To use mental effort to make something happen
  • Am (is, are) likely to do
  • To influence someone to do something
  • To make something happen by strongly wanting it

imagine

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US / ɪ'mædʒɪn /

UK / ɪˈmædʒɪn /

A1
  • verb
  • To think creatively about; form mental picture of

probably

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US / ˈprɒbəbli /

UK / ˈprɑbəbli /

A1
  • adverb
  • That is likely to happen or be true

wait

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US / weɪt /

UK / wet /

A1
  • verb
  • To delay or not do something until later
  • To spend time until an expected thing happens
  • To remain in a place until a thing happens

mission

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US / 'mɪʃn /

UK / ˈmɪʃən /

B1
  • noun
  • A task or role someone is given to do
  • Special assignment given to a person or group
  • Group tasked with a specific duty
  • A task given to someone to gain or achieve
  • Religious group wishing to convert others
  • Housing for a religious group working overseas
  • Religious or charitable task in a foreign country

atom

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US / 'ætəm /

UK / ˈætəm /

B1
  • noun
  • Smallest bit that matter can be broken down into

they

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US / ðeɪ /

UK / ðe /

A1
  • pronoun
  • Two or more people, animals, or things

change

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US / tʃeɪndʒ /

UK / tʃendʒ /

A1
  • noun
  • Exchange of one set of clothes for another
  • Money in the form of coins instead of paper
  • Money returned after giving too much
  • Act of making or becoming something else
  • verb
  • To exchange one set of clothes for another
  • To exchange one kind of money for another
  • To replace something with another thing
  • To make or become something else
  • To go from one train, bus, etc. and go to another

space

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US / speɪs /

UK / spes /

A1
  • noun
  • Empty area kept for a specific reason, like a car
  • Empty area with nothing in it
  • Area in the sky where the stars are
  • Area between written words on a page
  • verb
  • To make a certain distance or time between

bit

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US / bɪt /

UK / bɪt /

A1
  • noun
  • Device put in a horse's mouth to control it
  • Small piece of something
  • verb
  • (E.g. of fish) to take bait and be caught

human

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US / 'hju:mən /

UK / ˈhjumən /

A1
  • adjecitve
  • Concerning or characteristic of people
  • noun
  • A person; a man, woman or child

all

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US / ɔ:l /

UK / ɔl /

A1
  • adverb
  • Completely; totally
  • determiner
  • Being every one of something
  • pronoun
  • 100% of something; the complete amount

its

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US / ɪts /

UK / ɪts /

A1
  • adjecitve
  • Referring to or belonging to ‘it’
  • determiner
  • Of something; belonging or related to something
  • other
  • Possessive form of “it”

produce

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US / prə'dju:s /

UK / prəˈdus, -ˈdjus, pro- /

A1
  • noun
  • Fresh foods such as fruits and vegetables
  • verb
  • To grow something naturally
  • To make something appear
  • To manufacture something using machines
  • To control the making a movie or television show

build

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US / bɪld /

UK / bɪld /

A1
  • noun
  • Your physical shape; physique
  • verb
  • To establish e.g. a reputation, over time
  • To construct a house, office, factory

cap

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US / kæp /

UK / kæp /

B1
  • noun
  • Covering for the end or top of something
  • Small, soft hat often with a front visor or shade
  • An upper limit on the amount of (e.g. budget)
  • verb
  • To cover the top or end of an object
  • To limit the amount of usage of something

fiction

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US / ˈfɪkʃn /

UK / ˈfɪkʃən /

B1
  • noun
  • Made-up stories; imagined events
  • False statement or account about something

hairspray

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US / ˈheəspreɪ /

UK / ˈherspreɪ /

C2
  • noun
  • Spray used to hold hair in place

option

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US / 'ɒpʃn /

UK / ˈɑpʃən /

A2
  • noun
  • A choice
  • Right to buy or sell at a certain price and time

throw

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US / θrəʊ /

UK / θroʊ /

A1
  • noun
  • Arm movement to make a thing fly through the air
  • Loose cloth or blanket (usually over a chair)
  • Forcibly putting someone on the ground
  • verb
  • To use your arm to make something fly in the air
  • To move part of your body suddenly and forcefully
  • To confuse or upset someone
  • (E.g. judo) to forcibly put someone on the ground
  • To put something somewhere suddenly and roughly

dense

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US / dens /

UK / dɛns /

B1
  • adjecitve
  • Very thick and difficult to see, get through
  • Hard to understand
  • Uncomprehending; foolish; inconsiderate

solar

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US / 'səʊlə(r) /

UK / ˈsolɚ /

B1
  • adjecitve
  • Concerning the sun, or its heat

dioxide

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US / daɪˈɒksaɪd /

UK / daɪˈɑksaɪd /

B2
  • noun
  • An oxide containing two oxides per molecule

slam

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US / slæm /

UK / slæm /

B1
  • noun
  • Act or sound of closing a door, etc. violently
  • verb
  • To criticize sharply
  • To shut with a lot of force, making a loud noise

take

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US / teɪk /

UK / tek /

A1
  • noun
  • Filming of a single scene for TV or the movies
  • verb
  • To accept something that is offered
  • To use a method of traveling, e.g. a bus or train
  • To use a camera to make (a photo)
  • To pick up something and go away with it
  • To study a subject in school
  • To attempt to pass (an exam)
  • To require a certain amount of time, money, space

death

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US / deθ /

UK / dɛθ /

A2
  • noun
  • When someone dies; the end of life

protective

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US / prəˈtektɪv /

UK / prəˈtɛktɪv /

A2
  • adjecitve
  • Serving to defend against harm or danger

their

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US / ðɛː /

UK / ðer /

A1
  • determiner
  • Belonging to them

sublimate

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US / ˈsʌblɪmeɪt /

UK / ˈsʌblɪmət /

C2
  • verb
  • To cause a solid to become a gas

anything

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US / ˈeniθɪŋ /

UK / ˈɛniˌθɪŋ /

A1
  • pronoun
  • A thing of any kind

from

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US / frəm /

UK / frʌm, frɑm,frəm /

A1
  • preposition
  • Starting at a particular place, time or level

out

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US / aʊt /

UK / aʊt /

A1
  • adverb
  • No longer stylish (e.g. fashion)
  • Away from home, business, or the usual place
  • In a direction/movement away from inside or center
  • noun
  • Act when a batter cannot continue playing
  • verb
  • To tell people a secret

national

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US / 'næʃnəl /

UK / ˈnæʃənəl, ˈnæʃnəl /

A2
  • adjecitve
  • Concerning a nation as a whole
  • noun
  • A person of a particular country

over

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US / 'əʊvə(r) /

UK / ˈovɚ /

A1
  • adverb
  • Finished; no longer happening
  • Towards the ground/away from a standing position
  • noun
  • A set of six consecutive balls bowled in cricket
  • other
  • Finished
  • preposition
  • Showing the relation when a thing is above another
  • On or covering something
  • Above or across something
  • More than you need
  • From one side to the other
  • In the direction of; toward

minus

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US / ˈmaɪnəs /

UK / ˈmaɪnəs /

A2
  • adjecitve
  • Being close to the bottom of a letter grade
  • noun
  • Negative quality; disadvantage
  • Sign that indicates subtraction
  • preposition
  • Being less than zero in number
  • Used when subtracting one number from another
  • verb
  • To take one number away from another; subtract

temperature

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US / ˈtemprətʃə(r) /

UK / ˈtɛmpərəˌtʃʊr,-tʃɚ,ˈtɛmprə- /

A2
  • noun
  • When you your body heat is above normal
  • How hot or cold something is, e.g. the weather

couple

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US / 'kʌpl /

UK / ˈkʌpəl /

A2
  • noun
  • Two people in a romantic relationship
  • Two of something; two people; a pair
  • verb
  • To join something to something else
  • (Two animals) to engage in sexual relations
  • To put two people or things together

keep

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US / ki:p /

UK / kip /

A1
  • noun
  • Large, strong tower in the middle of a castle
  • Money spent on you so you can live in a place
  • verb
  • To continue doing something; not to stop
  • To stop balls going in a goal in sports
  • To not give back or return something
  • (Of food) to not spoil or not rot
  • To take possession of something to own, e.g. a pet
  • To have and continue to hold something
  • To do something that you have promised or agreed
  • To stay in a certain place or condition
  • To maintain the rules

something

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US / ˈsʌmθɪŋ /

UK / ˈsʌmθɪŋ /

A1
  • adverb
  • In some degree or measure
  • noun
  • a person or thing of some value or consequence
  • pronoun
  • Thing that is not yet known or named
  • Approximately

come

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US / kʌm /

UK / kʌm /

A1
  • verb
  • To arrive at a place
  • (Of mail) to be delivered
  • To move toward someone; go with someone
  • To reach a certain point or state

jar

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US / dʒɑ:(r) /

UK / dʒɑr /

B2
  • noun
  • Glass container for foods
  • verb
  • To have a harsh or unsettling effect on someone
  • To make a harsh sound to the ears

think

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US / θɪŋk /

UK / θɪŋk /

A1
  • verb
  • To have an idea about something without certainty
  • To have an idea, opinion or belief about something

another

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US / əˈnʌðə(r) /

UK / əˈnʌðɚ /

A1
  • adjecitve
  • One more, but not this
  • determiner
  • One more added
  • pronoun
  • One more (thing)

environment

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US / ɪn'vaɪrənmənt /

UK / ɛnˈvaɪrənmənt, -ˈvaɪən- /

A1
  • noun
  • Natural world in which plants and animals live
  • The entire surrounding conditions of something

hey

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US / heɪ /

UK / he /

A1
  • exclamation
  • What you say when you want someone's attention

call

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US / kɔ:l /

UK / kɔl /

A1
  • noun
  • A order or request for action
  • The sound an animal makes, often when in danger
  • A correct prediction, e.g. a decision in a game
  • A short visit to a place or person
  • A decision by a referee or umpire in a game
  • verb
  • To make a request or order for action
  • (Animal) to make sounds to warn of danger
  • To announce the date of an election
  • To make a judgment about something
  • To give someone or something a name
  • To guess in advance the result or outcome
  • To visit a place or person for a short time
  • To phone someone
  • To speak, announce or shout in a loud voice

far

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US / fɑ:(r) /

UK / fɑr /

A1
  • adjecitve
  • A long way away
  • Being a long way away
  • adverb
  • To a large degree or extent

where

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US / hwɛə /

UK / hwɛr, wɛr /

A1
  • conjunction
  • At or in the place which
  • In whatever place
  • pronoun
  • Word you use to ask the location of something

clean

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US / kli:n /

UK / klin /

A1
  • adjecitve
  • Not marked in any way; blank
  • Done according to the rules or standards; fair
  • Free from disease or sickness
  • Being free from dirt or marks; washed
  • Behaving well; not breaking any rules; legal
  • adverb
  • Completely; entirely
  • verb
  • To make free from dirt or marks; washed
  • To make neat and orderly e.g. a room
  • To remove the inner parts of an animal

and

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US / ənd /

UK / ənd, ən,ænd /

A1
  • conjunction
  • Used to refer to two or more things
  • Plus; in addition; on top of that
  • Used to introduce an action that follows another

hopefully

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US / ˈhəʊpfəli /

UK / ˈhopfəli /

A2
  • adverb
  • In a manner wishing something to happen

lot

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US / lɒt /

UK / lɑt /

A1
  • noun
  • What happens to a person in life from chance; fate
  • A group of people seen together
  • Item for sale at an auction
  • Small area of land used for a purpose e.g. parking

problem

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US / ˈprɒbləm /

UK / ˈprɑbləm /

A1
  • adjecitve
  • Causing trouble
  • noun
  • Something difficult to deal with or causes trouble
  • Question to show understanding of a math concept

next

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US / nekst /

UK / nɛkst /

A1
  • adverb
  • The one that follows another in time or order
  • At a time or place directly after the present one
  • noun
  • The one that follows after
  • adjecitve
  • Immediately after the previous one
  • First occurrence after the present one

could

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US / kəd /

UK / kʊd /

A1
  • other
  • Past form of 'can' to mean have ability
  • Used to ask for something politely, or to offer

magnetosphere

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US / mæg'ni:təsfɪə /

UK / mæg'ni:təˌsfɪr /

A1
  • noun
  • Magnetic field of a planet; the volume around the planet in which charged particles are subject more

know

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US / nəʊ /

UK / noʊ /

A1
  • verb
  • To be familiar with a person or place, thing
  • To feel sure or be convinced about something
  • To discover or be aware of something
  • To be able to distinguish
  • To have knowledge of things

shield

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US / ʃi:ld /

UK / ʃild /

B1
  • noun
  • A family's coat of arms or insignia
  • Device used to protect from a harmful force
  • Large piece of metal, etc. carried by police, etc.
  • Large piece of metal carried for protection
  • verb
  • To cover (e.g. your face) so as to hide from
  • To cover from a dangerous or harmful force

away

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US / ə'weɪ /

UK / əˈwe /

A1
  • adjecitve
  • Not present
  • adverb
  • Disappear completely
  • Doing something with a lot of energy
  • Not here; far from here; in a different direction
  • To a different area, location

polar

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US / ˈpəʊlə(r) /

UK / ˈpolɚ /

B1
  • adjecitve
  • Concerning the areas near the North or South poles

air

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US / eə(r) /

UK / er /

A1
  • noun
  • Mixture of gases around the earth that we breathe
  • A person's manner intended to impress others
  • verb
  • To expose to the outside, to dry or freshen
  • To broadcast a TV or radio show
  • To open a subject to discussion and debate

fahrenheit

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US / ˈfærənhaɪt /

UK / ˈfærənˌhaɪt /

B1
  • noun
  • Measurement of temperature

sun

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US / sʌn /

UK / sʌn /

A1
  • noun
  • Light and heat coming from a large star in the sky
  • Hot shining star the Earth moves around
  • verb
  • To lie in the sunshine and enjoy its warmth

almost

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US / 'ɔ:lməʊst /

UK / ˈɔlˌmost, ɔlˈmost /

A1
  • adverb
  • Only a little less than, nearly, not quite

cover

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US / 'kʌvə(r) /

UK / ˈkʌvɚ /

A1
  • noun
  • A different version of another song
  • Bed sheets; blankets
  • (Police or military) protection from attack
  • Amount of money to be paid in an insurance claim
  • Thing you put over something to close or hide it
  • Front and back part of a book or magazine
  • Shelter built to protect from the natural elements
  • verb
  • To record a different version of another song
  • To include as part of its area
  • To put something over something to hide it
  • To discuss a subject in a talk or meeting
  • To form a layer over something so it is hidden
  • To have sufficient funds to pay for something
  • To include something within an agreed limit
  • To report news on TV, radio or in a newspaper
  • (Police or military) to protect from attack
  • To travel a certain distance in a given time
  • To wrap something with something, such as a cloth

have

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US / həv /

UK / hæv /

A1
  • verb
  • To drink, smoke, eat or use something
  • To experience the effects of something
  • To organize an event, or join in an activity
  • To own, possess, or hold something
  • To cause to happen or produce a particular effect

magically

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US / 'mædʒɪklɪ /

UK / 'mædʒɪklɪ /

B1
  • adverb
  • In a manner that uses or involves magic

onto

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US / ˈɒntə /

UK / ˈɑnˌtu, -tə, ˈɔn- /

A1
  • preposition
  • Towards a certain direction/into a certain area

focus

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US / 'fəʊkəs /

UK / ˈfokəs /

A2
  • noun
  • Main purpose or center of interest or activity
  • verb
  • To see clearly by adjusting your eyes or a camera
  • To keep your attention, concentration on one thing

ice

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US / aɪs /

UK / aɪs /

A1
  • noun
  • Frozen gas or liquid, esp. water
  • Sweet food made of frozen cream, or juices
  • verb
  • To make something cold by putting on frozen water
  • To spread a sweet and creamy substance on a cake

asteroid

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US / ˈæstərɔɪd /

UK / ˈæstəˌrɔɪd /

B2
  • noun
  • Very small planets that move around the sun

process

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US / prə'ses /

UK / ˈprɑsˌɛs, ˈproˌsɛs /

A2
  • noun
  • Dealing with official forms in the way required
  • Set of changes that occur slowly and naturally
  • verb
  • To organize and use data in a computer
  • To deal with official forms in the way required
  • To prepare by treating something in a certain way
  • To adopt a set of actions that produce a result
  • To convert by putting something through a machine

mirror

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US / 'mɪrə(r) /

UK / ˈmɪrɚ /

A2
  • noun
  • Thing with glass surface used to look at yourself
  • An accurate impression or picture of something
  • verb
  • To reflect (an image)
  • To have similar qualities to something else

with

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US / wɪð /

UK / wɪð, wɪθ /

A1
  • preposition
  • As an employee of a certain company
  • Against something or someone
  • By using something as a means
  • Due to; because of
  • Including
  • Possessing as a feature
  • Related to
  • (Of the manner/attitude by which you do something)
  • Used to express that people or things are together
  • Subtitles section
  • Hey there!
  • Would you like to live on Mars?
  • That’s a garbage idea.
  • And if you try to go out there right now, you would simultaneously freeze and choke to death.
  • I’m Brendan Mullin, an emerging explorer with National Geographic and an astrobiologist, and I’m here to tell you to wait.
  • Mars is almost one and a half times as far away from the Sun as Earth is.
  • And its atmosphere is about 100 times less dense than our own.
  • The average surface temperature on Mars is something like minus 81 degrees Fahrenheit.
  • But as humans, if we’re good at one thing, it’s drastically changing our environment.
  • So, what if we could make Mars more like Earth?
  • There’s an idea that’s been around for 100 years or so in science fiction.
  • It’s called terraforming.
  • It basically means we want to take whatever planet and turn it into Earth.
  • To think about terraforming, well, imagine Mars is a glass bowl, like this.
  • We want to take this Mars terrarium and thicken up its atmosphere a little bit.
  • There’s a couple of options.
  • We could take asteroids and comets and send them hurtling into the Martian atmosphere and have them smash into the polar ice caps.
  • When you throw these asteroids and comets into these poles, it will cause them to sublimate, turn directly from solid into a gas.
  • Hopefully, that will pump enough carbon dioxide gas into the atmosphere.
  • Or you could take giant space mirrors that will focus the sun’s rays onto the polar ice caps, causing basically the same effect.
  • Keep your space mirrors clean.
  • Or, and this is a fun option too, you could build a whole bunch of giant factories on the surface of the planet that produce a lot of CFCs, chlorofluorocarbons.
  • You know, the things that we outlawed in the 80s because of all the hairspray we were using.
  • So now we’ve got a thicker, warmer atmosphere.
  • So we’ve got a lid for our Mars jar here.
  • But it’s still basically an atmosphere of poison.
  • I wonder if there’s anything that will magically turn carbon dioxide into something like oxygen for us to breathe.
  • Plants!
  • Now we have plants, all we need is time.
  • These plants on their own will take carbon dioxide from the air and turn that into oxygen that we can breathe.
  • Mission accomplished!
  • We terraformed Mars, right?
  • Kind of.
  • I mean, there’s a couple of big things we need to think about first.
  • One is, well, it’s going to be really expensive, and it’s going to take a long time.
  • And another problem, which is probably the worst, is that Mars doesn’t have a magnetosphere, a protective magnetic shield like the Earth does.
  • Solar wind, the charged particles that come off of the sun, slam into that atmosphere and will strip away atoms and molecules.
  • And over a long enough period of time, we’re going to have to start this terraforming process all over again.
  • Let’s say we could solve all those problems and terraform Mars anyway.
  • We made it so that the next generation of astronauts could live there no problem.
  • Would you want to go?
  • Mars was warmer and wetter, and it even had an ocean that covered the entire northern hemisphere.
  • So where did that ocean go?