Sound travels about 4 times faster in water than in air.
408
Sound at the right vibration can bore holes through a solid object.
134
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
One ragweed plant can release as many as one billion grains of pollen!
51
Most dust particles in your house come from dead skin.
48