There aren't too many of us who think leeches are cool--but they are still used in medicine, and now there is even a mechanical leech.
Have you ever wondered where medical scientists get tissue samples for their research?
Have you spotted a strange mole, only to discover it doesn’t really resemble a mole at all? Learn more on this Moment of Science.
Learn about the motor cortex and its functions on this Moment of Science.
The chemicals that cause this reaction are stored in our nerve endings, and when we die, they’re gradually released.