In 1850, only 8% of the people in California were women.
0
The average ice berg weighs 20,000,000 tons!
54
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
Europe is the only continent without a desert.
62
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
The city of Houston, Texas is built on a swamp and is slowly sinking!
89