Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
One 75-watt bulb gives more light than three 25-watt bulbs.
57
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
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
Liquid TIDE laundry detergent glows under a blacklight.
96
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Balsa wood is classified as a hard wood!
41