If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
Israel's Dead Sea is 1,312 feet below sea level.
48
The Caspian Sea is also classed as the world's largest lake.
52
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41