Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The average home creates more pollution than does the average car.
33
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
21
Billions of neutrinos pass unnoticed through your body every second.
6