The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
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
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
The average ice berg weighs 20,000,000 tons!
54
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41