The secret to a worm's regenerative powers lies in stem cells. Stem cells are like blank slates; on their own, they do not perform any specific function, but they can develop into hundreds of ...

These worms are experts in regeneration – they can survive losing a large chunk of their bodies – and now we have a better idea of how they're doing it: specialized cells near a wound are ...

Worms are hermaphrodite, which means they have both male and female reproductive cells. They do need another worm to reproduce with though. They lay their eggs, which hatch as little worms.