Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Your brain is 80% water.
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Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
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!
21
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Iron weighs more after it rusts.
16
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15