There's a lake under Antarctica that is 25 million years old called Lake Vostok.
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The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
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
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
Every year, Alaska has about 5,000 earthquakes.
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