Brass doorknobs automatically disinfect themselves in about 8 hours.
18
One barrel of petroleum holds 42 gallons.
20
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Cold water weighs more than hot water.
93
For every gallon of sea water, you get more than a quarter pound of salt.
45
A ball of glass will bounce higher than a ball made of rubber.
73
One 75-watt bulb gives more light than three 25-watt bulbs.
57
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