The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Nearly 50% of the world's scientists are assigned to military projects.
71
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Sound at the right vibration can bore holes through a solid object.
134
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
For every gallon of sea water, you get more than a quarter pound of salt.
45