The smell of freshly cut grass is actually a plant distress call.
31
Cold water weighs more than hot water.
93
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Hot water can freeze faster than cold water.
181
If the chemical sodium is dropped into water it will immediately and violently explode.
67
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 hair of an adult man or woman can stretch 25 percent of its length without breaking.
116