When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
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
For every gallon of sea water, you get more than a quarter pound of salt.
45
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
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
Out of all the senses, smell is most closely linked to memory.
146
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18