Most dust particles in your house are made from dead skin!
67
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Balsa wood is classified as a hard wood!
41
Aluminum used to be more valuable than gold!
84
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
One 75-watt bulb gives more light than three 25-watt bulbs.
57