Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
The smell of freshly cut grass is actually a plant distress call.
31
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
Most dust particles in your house come from dead skin.
48