Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
We share 70% of our DNA with a slug.
218
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
In one day, adult lungs move about 10,000 litres of air.
11
One human hair can support 3 ounces.
191