After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
The world's shortest man measures only 21.5 inches.
73
In one day, adult lungs move about 10,000 litres of air.
11
The human brain doesn't stop developing until about 25 years old.
102
Your fingernails grow faster in summer.
744
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
35
Early American humans hunted car-size armadillos and used their shells for houses.
12