[http://youtu.be/U9g4gRWkFTs] (YouTube link)The ph...  ...eems so normal, but is very different from what a single-cell organism has to deal with. The title comparison o...  ...resentation comes from the fact that a sperm is a single cell that must move, but cannot do it the same way lar...

celled creatures live in our forests, but are so differe...  .... While they spend part of their life as ordinary single-celled creatures, they sometimes grow into truly alien f...  ...species that allows 20,000 individuals to form a single sluglike body. Not only do they clump t...