Featured Facts

The heart and circulatory system for kids

The heart and circulatory system for kids 1. It takes 20 seconds for blood to circ

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Lungs can float on water

At rest, a person breathes about 14 to 16 times per minute. After exercise it

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Amazing Facts


  1. The weight of air in a milk glass is about the same as the weight of
    one aspirin. (But one also wonders how big a milk glass is… anyone?)
  2. There is air in space, but very little of it. In fact, it is
    equivalent to a marble in a box 5 miles wide. Most of the gas is
    captured by the gravitational pull of other celestial bodies.Thanx

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