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.
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A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
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An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
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The Atlantic Ocean is saltier than the Pacific Ocean.
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The Caspian Sea is also classed as the world's largest lake.
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It takes a drop of ocean water more than 1,000 years to circulate around the world.
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The water between India and Sri Lanka is only 3-30 feet deep and was purportedly passable on foot until 1480 AD when a cyclone moved some sand around.
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