Why do our fingers and toes wrinkle after a nice long bath?
Good question. The simple answer is that the outer layer of skin is made up of a dead, water-loving substance called keratinocytes. These cells expand when they meet … read the full post
There are 45 miles of nerves in our skin. At least, that’s the best estimate we could find – scientists are surprisingly quiet on the subject, maybe they haven’t got around to measuring them yet…
Curious about the astronaut? Well, … read the full post