Sound travels about 4 times faster in water than in air.
408
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
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
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12