A female African clawed frog, Xenopus laevis, was housed at the Biological Resources Facility of North Carolina State University in a tank with two other females. The frog was ∼1.5 years old and ...

A new chemical treatment allowed African clawed frogs, which normally don’t regenerate limbs, to regrow functional hind legs following amputation. Dan is a News Editor at The Scientist. He writes and ...