MEXICO CITY, Nov 20 (Reuters) - Mexico's axolotl salamandercan almost magically heal itself, holding the power to regrowits heart and brain. But there is one feat it may not pull off:survive dire ...

Mexico's axolotl salamander can almost magically heal itself, holding the power to regrow its heart and brain. But there is one feat it may not pull off: survive dire threats to the last wild place it ...