Balsa wood is classified as a hard wood!
41
Iron weighs more after it rusts.
68
4.5 pounds of sunlight strike the Earth each day.
27
A cesium atom in an atomic clock beats over nine billion times a second.
43
If the chemical sodium is dropped into water it will immediately and violently explode.
67
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
Most dust particles in your house are made from dead skin!
67