In 2011, there were 3 known cases around the world of twins coming from different fathers.
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According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
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If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
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A fall of 30 feet can be survived by most cats.
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