One 75-watt bulb gives more light than three 25-watt bulbs.
57
In zero gravity, a candle's flame is round and blue.
16
Liquid TIDE laundry detergent glows under a blacklight.
96
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
The average home creates more pollution than does the average car.
33
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
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
Hot water can freeze faster than cold water.
181