The axolotl is a Mexican salamander with an incredible ability: Cut its leg off, and the limb will grow right back! How it does this and why humans can’t is still a bit of a mystery. Researchers like Susan Bryant of UC Irvine are studying these amphibians to understand the underlying mechanisms for their miraculous regenerative powers.
Produced by Christian Baker
Music by Audio Network
Additional Stills and Video by the Howard Hughes Medical Institute, Dr. Susan Bryant, Dr. David Gardiner, and Dr. Akira Satoh