Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The force of a suction cup is calculated using F=AP.
15
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
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
4.5 pounds of sunlight strike the Earth each day.
27
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
One ragweed plant can release as many as one billion grains of pollen!
51