Cold water weighs more than hot water.
93
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
At 15 years old, Jack Andraka invented a method of diagnosing pancreatic cancer, thus helping to save the lives of millions of people around the world. It is 168 times faster, 26,000 times cheaper, 400 times more sensitive, and has a 99% success rate.
15
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Hot water can freeze faster than cold water.
181
Each day, up to 150 species of life become extinct.
-23
Sound travels about 4 times faster in water than in air.
408