Europe is the only continent without a desert.
62
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
In 1850, only 8% of the people in California were women.
0
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
One cubic mile of seawater contains about 50 pounds of gold.
79
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63