Iron weighs more after it rusts.
16
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Pure water (H2O) does not conduct electricity on its own.
46
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
A single speck of dust is half way in size between a subatomic particle and the Earth.
15