Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Scientists are now able to grow 'beating' heart tissue in a lab!
162
A ball of glass will bounce higher than a ball made of rubber.
73