There is enough energy in one bolt of lightning to power a home for two weeks!
102
Held in farts enter your bloodstream and are bad for your body.
26
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
