When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Out of all the senses, smell is most closely linked to memory.
146
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
German chemists made a replica of a trophy the size of one molecule.
68
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
A cesium atom in an atomic clock beats over nine billion times a second.
43
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39