One cubic mile of seawater contains about 50 pounds of gold.
79
More than 25% of the world's forests are in Siberia.
51
Australia's Great Barrier Reef is 1,250 miles long!
45
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
The state with the longest coastline in the Continental U.S. is Michigan.
31
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56