Balsa wood is classified as a hard wood!
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MIT has developed a camera that captures the speed of light at a trillion frames per second.
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The Earth's atmosphere weighs about 5.5 quadrillion tons.
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Optical illusions occur when what the eyes see conflicts with what the brain expects.
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Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
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The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
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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.
15