Iron weighs more after it rusts.
68
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38