Pumice is the only rock that floats on water.
14
One ragweed plant can release as many as one billion grains of pollen!
51
Sound at the right vibration can bore holes through a solid object.
134
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
The average temperature at 40,000 feet above sea level is -60 F.
56
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
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155