The Earth's atmosphere weighs about 5.5 quadrillion tons.
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In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
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Most dust particles in your house come from dead skin.
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At 15 years old, Jack Andraka invented a method of diagnosing pancreatic cancer, thus helping to save the lives of millions of people around the world. It is 168 times faster, 26,000 times cheaper, 400 times more sensitive, and has a 99% success rate.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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