Scientists are investigating changes to the Antarctic ice and the possible consequences.
Polar pictures from the programme Vanishing Antarctic.
We went to the ends of the earth for this to test your Arctic and Antarctic knowledge.
What can be more inhospitable than the cold, white emptiness of the frozen polar tundra.
Read about the Arctic explorers who risked everything to reach the top of the world.
What impact will global warming, holes in the ozone and atmospheric haze have?
Find out more about the most inhospitable places on the planet; the Arctic and Antarctic.
Follow top travel writer Tom Hall's advice on how to get to the Antarctic.