Photograph of a specimen of the common European starfish Asterias rubens with a regenerating arm. Starfish shed arms (autotomy) when attacked by predators and then regenerate a new arm to replace the ...

In the name of survival, starfish sever their own body parts to escape predators. They will also eventually regenerate those lost limbs, but how this biological process works has remained a mystery.

Injuries are a part of life. When humans get hurt, our wounds heal, but scars remain and lost body parts never return. In the ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. CHICAGO — We’ll give the people what they ...