Meet the Mysterious Electrides

The ammonia production plant at Ludwigshafen, Germany, has operated for more than a century. It was the first to use the Haber-Bosch process, which garnered Nobel Prizes for its inventor and developer, Fritz Haber and Carl Bosch. Today, plants including this one run by the chemical company BASF are seeking more renewable ways to produce ammonia. Credit: BASF SE