10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
The state with the longest coastline in the Continental U.S. is Michigan.
31
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
One cubic mile of seawater contains about 50 pounds of gold.
79
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40