In 1850, only 8% of the people in California were women.
0
The average ice berg weighs 20,000,000 tons!
54
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
Australia's Great Barrier Reef is 1,250 miles long!
45
More than 25% of the world's forests are in Siberia.
51
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
Forest fires move faster uphill than downhill.
52