One cubic mile of seawater contains about 50 pounds of gold.
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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
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
The state of Florida is bigger than England!
74
The state with the longest coastline in the Continental U.S. is Michigan.
31
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40