Liquid TIDE laundry detergent glows under a blacklight.
96
Iron weighs more after it rusts.
68
Nylon is made from coal and petroleum.
42
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
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
Out of all the senses, smell is most closely linked to memory.
146
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51