If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
It's still possible to see the division between East and West Germany due to different light bulbs.
5
Australia's Great Barrier Reef is 1,250 miles long!
45
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56