The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
Forest fires move faster uphill than downhill.
52
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
In 1850, only 8% of the people in California were women.
0
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243