A new device helps frogs regrow working legs after an amputation

The cells of adult frogs seem to remember how to regrow lost legs, and a new chemical kick starter helps them hop to it. Scientists have been seeking ways to…

Gut microbes help some squirrels stay strong during hibernation

Gut microbes give some squirrels a helping hand to stay strong during hibernation. The microorganisms appear to help the squirrels recycle nutrients to keep the rodents’ muscles taut, researchers report…