Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
One human hair can support 3 ounces.
191
Human hair and fingernails continue to grow after death.
7
Babies crawl an average of 200m a day.
212
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23