The Angel Falls in Venezuela is the world's highest waterfall (979 meters / 3212 ft.), three times the size of the Eiffel Tower.

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Crickets hear through their knees.

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Global Positioning System (GPS) is the only system today that can show your exact position on the Earth anytime, in any weather, no matter where you are!

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Shanghai, China is the largest city by population (13.3 million) in the world.

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Originally, 6 million square miles of tropical rainforest existed worldwide. But as a result of deforestation, only 2.6 million square miles remain.

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The air located around a lightning bolt is heated to around 30,000 degrees Celsius. This is 5 times hotter than the surface of the sun.

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In the United States, more tomatoes are consumed than any other single fruit or vegetable!

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The flower with the world's largest bloom is the Rafflesia arnoldii. This rare flower is found in the rainforests of Indonesia. It can grow to be 3 feet across and weigh up to 15 pounds.

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The highest temperature ever recorded in the United States was 134 degrees F at Greenland Ranch in Death Valley, California.

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Earth is the only planet on which water can exist in liquid form on the surface.

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