Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Each day, up to 150 species of life become extinct.
-23
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
In zero gravity, a candle's flame is round and blue.
16
The smell of freshly cut grass is actually a plant distress call.
31
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108