Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The smell of freshly cut grass is actually a plant distress call.
31
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
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
One barrel of petroleum holds 42 gallons.
20
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
A cubic yard of air weighs about 2 pounds at sea level.
31
For every gallon of sea water, you get more than a quarter pound of salt.
45