One cubic foot of gold weighs more than 1,200 pounds!
78
The smell of freshly cut grass is actually a plant distress call.
31
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
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
The bark of an older redwood tree is fireproof.
65
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18