A cubic yard of air weighs about 2 pounds at sea level.
31
Sound travels about 4 times faster in water than in air.
408
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51
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
Cold water weighs more than hot water.
93
Balsa wood is classified as a hard wood!
41
According to studies, men change their minds two to three times more often than women.
72