Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
4.5 pounds of sunlight strike the Earth each day.
27
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The average home creates more pollution than does the average car.
33
One ragweed plant can release as many as one billion grains of pollen!
51
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Nylon is made from coal and petroleum.
42
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21