The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
Forest fires move faster uphill than downhill.
52
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
There are approximately three chickens for every human on Earth.
13
The Sahara desert expands at about 1km per month.
90