A cubic yard of air weighs about 2 pounds at sea level.
31
Nylon is made from coal and petroleum.
42
The earth is approx. 6,588,000,000,000,000,000 tons.
175
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
Scientists are working on a portable spray-on-skin that can heal severe wounds in just a few minutes.The spray mainly contains important proteins that can reprogram the injured cells to become stem cells, and back to young uniformed skin cells. So far they were able to accelerate healing process from 12 weeks to 21 days with a similar approach.
16
Nearly 50% of the world's scientists are assigned to military projects.
71