Sound travels about 4 times faster in water than in air.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
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The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
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There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
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