The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Sound travels about 4 times faster in water than in air.
408
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
Each day, up to 150 species of life become extinct.
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