The only letter not appearing on the Periodic Table is the letter "J".
180
4.5 pounds of sunlight strike the Earth each day.
27
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
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 single speck of dust is half way in size between a subatomic particle and the Earth.
15