The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
The state of Florida is bigger than England!
74
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
The average ice berg weighs 20,000,000 tons!
54
Check your map! Virginia extends farther west than West Virginia.
67
The Sahara desert expands at about 1km per month.
90