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
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
Louisiana is the only state that grows in land area every year (Due to alluvial deposits from the Mississippi River).
41
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
Forest fires move faster uphill than downhill.
52
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59