The state with the longest coastline in the Continental U.S. is Michigan.
31
One cubic mile of seawater contains about 50 pounds of gold.
79
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
Every year, Alaska has about 5,000 earthquakes.
31
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The Caspian Sea is also classed as the world's largest lake.
52
More than 25% of the world's forests are in Siberia.
51