Cut off a newt’s tail or a leg, or remove a lens from its eye, and it grows back. However, whether newts can continue to do this throughout their lives, or lose the ability as they get older, has remained a mystery. Now, in an experiment spanning 16
In late June 2009, a small group of mountain gorillas in Rwanda’s Volcanoes National Park began to fall ill. One by one, 11 of the dozen apes started exhibiting severe respiratory problems. An investigation led by wildlife veterinarian Jean-Felix Kin