The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
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
The average home creates more pollution than does the average car.
33
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The left ear is more responsive to words of love and emotion whispered into it than the right.
40