Sound travels fifteen times faster through steel than through air.
134
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Pumice is the only rock that floats on water.
14
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17