The Earth's atmosphere weighs about 5.5 quadrillion tons.
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According to studies, men change their minds two to three times more often than women.
72
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
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
The sun is 330,330 times larger than the earth.
75
Iron weighs more after it rusts.
68
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17