0 parts of the earth's surface where water exists as ice: --
Scientists now have much better technology, especially satellites, to study polar regions known as the cryosphere.
Earth's cryosphere—its high-latitude regions of snow and ice—represents a central piece of the climate system.
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Vi kan slutföra det steg för steg hur lång vägen än är och den kan inte slutföras hur kort vägen än är om du inte ens markerar ditt fotavtryck.