Diamonds can be shattered with a hammer.
-104
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
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The storage capacity of human brain exceeds 4 Terrabytes.
140
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Scientists are now able to grow 'beating' heart tissue in a lab!
162
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
A cubic yard of air weighs about 2 pounds at sea level.
31