Indoor pollution is 10 times more toxic than outdoor pollution.
62
Pure water (H2O) does not conduct electricity on its own.
46
The smell of freshly cut grass is actually a plant distress call.
31
4.5 pounds of sunlight strike the Earth each day.
27
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
The average temperature at 40,000 feet above sea level is -60 F.
56
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