Sound travels about 4 times faster in water than in air.
408
Most dust particles in your house are made from dead skin!
67
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
One barrel of petroleum holds 42 gallons.
20
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57