The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Out of all the senses, smell is most closely linked to memory.
146
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
Sound travels fifteen times faster through steel than through air.
134
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
The sun is 330,330 times larger than the earth.
75