Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Each day, up to 150 species of life become extinct.
-23
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
4.5 pounds of sunlight strike the Earth each day.
27
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Pumice is the only rock that floats on water.
14
For a high school science fair project, 17-year-old Michio Kaku built a particle accelerator in his parent's garage that was able to generate a magnetic field 20,000 times greater than the Earth's and produce collisions powerful enough to create antimatter.
34