MANY ARCHAEA & BACTERIA ARE EXTREMOPHILES BUT SOME ARCHAEA ARE HYPER THERMOPHILES LIKE SULFOLOBALES DISCOVERED FIRST IN SOLFATANA VOLCANO ITALY AND LATER IN MANY HOT SPRINGS AND HOT MUD POOLS THEY HAVE SPECIAL STRUCTURE AND METABOLISM TO BE ABLE TO SURVIVE AT 70-85 C MAIN THING IS THEY CAN GENERATE ELECTRICITY EVEN AT 80 C IN MFC INTERESTINGLY THEY HAVE BEEN SELECTED FOR SPACE TRIPS BY NASA .

2. Exoelectrogens Sulfolobus vidyut janak prani
Abode of Archaea
Yellowstone National Park USA
Grand prismatic spring
Jim Peaco –national park service – en.wikipedia.org – Public domain
Jim hedd - fuming Solftara volcano Italy –flickr - WC-cc