The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Balsa wood is classified as a hard wood!
41
The bark of an older redwood tree is fireproof.
65
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11