The puzzling planarian regrows its brain

An interesting look at brains and souls comes from research on a tiny worm called a planarian. If you cut them in half and wait a week or two, you get two planarians identical to the original. Planarians have a head with a couple eyes and a brain with about 8000 neurons. In fact, if you choose the right part you can grow a new worm from 1/279th of the original. (No fair asking me Continue reading and add your comment →