The Earth's atmosphere weighs about 5.5 quadrillion tons.
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In zero gravity, a candle's flame is round and blue.
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Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
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In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
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Nearly 50% of the world's scientists are assigned to military projects.
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Scientists are now able to grow 'beating' heart tissue in a lab!
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Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
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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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