Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. For a group of small aquatic animals known as hydra, decapitation is ...

Researchers pinpointed the genetic machinery behind some of these tiny creatures’ amazing powers of regeneration. By Sam Jones In rivers and streams across the globe lives a tube-shaped carnivore. It ...

1. In many basal metazoans, both somatic and reproductive functions are performed by cellular derivatives of a single multipotent stem cell population. Reproduction can drain these stem cell pools, ...

(Santa Barbara, Calif.) Why are most organisms sexual? The question of why most species reproduce sexually and others reproduce asexually has stymied biologists for years (particularly since asexual ...