Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
Forest growth in the US has exceeded harvest since the 1940’s. Today, we have more trees than any time in the past 100 years.
14
It's still possible to see the division between East and West Germany due to different light bulbs.
5
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
The average ice berg weighs 20,000,000 tons!
54