The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
There are approximately three chickens for every human on Earth.
13
There are more than 50,000 earthquakes throughout the world every year!
47
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
Israel's Dead Sea is 1,312 feet below sea level.
48
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25