The city of Houston, Texas is built on a swamp and is slowly sinking!
89
The state of Florida is bigger than England!
74
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
Even Antarctica has an area code. It's 672.
58
More than 25% of the world's forests are in Siberia.
51
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
The Sahara desert expands at about 1km per month.
90
The Amazon rainforest produces more than 20% the world's oxygen supply.
182