Sound travels fifteen times faster through steel than through air.
134
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
The smell of freshly cut grass is actually a plant distress call.
31
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
Diamonds can be shattered with a hammer.
-104
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21