The earth is approx. 6,588,000,000,000,000,000 tons.
175
Out of all the senses, smell is most closely linked to memory.
146
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Aluminum used to be more valuable than gold!
84
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9