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
In zero gravity, a candle's flame is round and blue.
16
Sound travels about 4 times faster in water than in air.
408
One ragweed plant can release as many as one billion grains of pollen!
51
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Scientists in Germany have developed a candy that doesn't cause cavities.
11
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9