Diamonds can be shattered with a hammer.
-104
Sound at the right vibration can bore holes through a solid object.
134
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Billions of neutrinos pass unnoticed through your body every second.
6
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
4.5 pounds of sunlight strike the Earth each day.
27