Babies crawl an average of 200m a day.
212
Females learn to talk earlier, use sentences earlier, and learn to read more quickly than males.
119
Yawns are more contagious among people with closer relationships.
163
Women mature much faster than men.
1k
In a year, the average person walks four miles to make his or her bed.
56
Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
7
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15