At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Diamonds can be shattered with a hammer.
-104
For every gallon of sea water, you get more than a quarter pound of salt.
45