One cubic mile of seawater contains about 50 pounds of gold.
79
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
Louisiana is the only state that grows in land area every year (Due to alluvial deposits from the Mississippi River).
41
In 1850, only 8% of the people in California were women.
0
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
Forest fires move faster uphill than downhill.
52
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181