Losing a limb is a life-altering event for any human or animal, but fortunately, many amputees adapt well to life without an arm or leg. That's not to say it won't have its challenges, especially at ...

Some animals can regrow lost body parts. Salamanders and frog tadpoles can rebuild entire limbs after amputation. Mammals cannot. For decades, biologists have tried to understand why. Now a team led ...