The smell of freshly cut grass is actually a plant distress call.
31
The average temperature at 40,000 feet above sea level is -60 F.
56
Out of all the senses, smell is most closely linked to memory.
146
Most dust particles in your house come from dead skin.
48
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
For every gallon of sea water, you get more than a quarter pound of salt.
45
4.5 pounds of sunlight strike the Earth each day.
27
