There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
The human eye blinks an average of 4,200,000 times a year.
233
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
The human brain has the capacity to store everything that you experience.
4k
The human brain doesn't stop developing until about 25 years old.
102
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456