Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
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
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The only letter not appearing on the Periodic Table is the letter "J".
180
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
If the chemical sodium is dropped into water it will immediately and violently explode.
67
A ball of glass will bounce higher than a ball made of rubber.
73