In zero gravity, a candle's flame is round and blue.
16
Most dust particles in your house come from dead skin.
48
Sound travels about 4 times faster in water than in air.
408
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
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
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
One third of the electricity produced on earth is used to power electric light bulbs!
75