Balsa wood is classified as a hard wood!
41
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
German chemists made a replica of a trophy the size of one molecule.
68
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
A cesium atom in an atomic clock beats over nine billion times a second.
43
Your brain is 80% water.
525
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199