Pumice is the only rock that floats on water.
14
A ball of glass will bounce higher than a ball made of rubber.
73
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
A cesium atom in an atomic clock beats over nine billion times a second.
43
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71