The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Cold water weighs more than hot water.
93
One 75-watt bulb gives more light than three 25-watt bulbs.
57
The average home creates more pollution than does the average car.
33
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16