Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Out of all the senses, smell is most closely linked to memory.
146
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Balsa wood is classified as a hard wood!
41
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
In zero gravity, a candle's flame is round and blue.
16