Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Most dust particles in your house come from dead skin.
48
One third of the electricity produced on earth is used to power electric light bulbs!
75
The average home creates more pollution than does the average car.
33
Sound travels fifteen times faster through steel than through air.
134
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
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75