Out of all the senses, smell is most closely linked to memory.
146
Pure water (H2O) does not conduct electricity on its own.
46
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
One ragweed plant can release as many as one billion grains of pollen!
51
One cubic foot of gold weighs more than 1,200 pounds!
78
A cubic yard of air weighs about 2 pounds at sea level.
31
Billions of neutrinos pass unnoticed through your body every second.
6