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Space starts at the point known as the Kármán line and is at an altitude of 100km
The temperature in the Sahara desert can get up 54°C
Antarctica is Earth's southernmost continent and is the coldest place on Earth
The Tibetan name for Everest is Chomolungma
Robert Swan was the first person to travel to both the North and the South Pole
Marine biologist Tony Rice discusses the abyss, the world's open trenches in the ocean
