Sound travels about 4 times faster in water than in air.
408
One 75-watt bulb gives more light than three 25-watt bulbs.
57
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
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
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
If the chemical sodium is dropped into water it will immediately and violently explode.
67
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
A cesium atom in an atomic clock beats over nine billion times a second.
43