The smell of freshly cut grass is actually a plant distress call.
31
Iron weighs more after it rusts.
16
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
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
One cubic foot of gold weighs more than 1,200 pounds!
78
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
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