The city of Houston, Texas is built on a swamp and is slowly sinking!
89
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
Forest growth in the US has exceeded harvest since the 1940’s. Today, we have more trees than any time in the past 100 years.
14
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
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
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10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Every year, Alaska has about 5,000 earthquakes.
31