One barrel of petroleum holds 42 gallons.
20
Aluminum used to be more valuable than gold!
84
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Scientists are now able to grow 'beating' heart tissue in a lab!
162
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