The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Hot water can freeze faster than cold water.
181
Nearly 50% of the world's scientists are assigned to military projects.
71
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Sound at the right vibration can bore holes through a solid object.
134
One third of the electricity produced on earth is used to power electric light bulbs!
75
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17