The average temperature at 40,000 feet above sea level is -60 F.
56
The average home creates more pollution than does the average car.
33
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
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Sound travels fifteen times faster through steel than through air.
134
One 75-watt bulb gives more light than three 25-watt bulbs.
57