Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
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
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
The bark of an older redwood tree is fireproof.
65
Most dust particles in your house are made from dead skin!
67
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Sound travels fifteen times faster through steel than through air.
134