Sound travels about 4 times faster in water than in air.
408
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Sound travels fifteen times faster through steel than through air.
134
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
At 15 years old, Jack Andraka invented a method of diagnosing pancreatic cancer, thus helping to save the lives of millions of people around the world. It is 168 times faster, 26,000 times cheaper, 400 times more sensitive, and has a 99% success rate.
15
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
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199