Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
One third of the electricity produced on earth is used to power electric light bulbs!
75
A ball of glass will bounce higher than a ball made of rubber.
73
Each day, up to 150 species of life become extinct.
-23
Scientists are now able to grow 'beating' heart tissue in a lab!
162
The earth is approx. 6,588,000,000,000,000,000 tons.
175