Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
Most dust particles in your house come from dead skin.
48
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16