Difference engine: A head of steam

#Energy

GEOTHERMAL energy, long the poor relation among the more glamorous renewable technologies, is at long last ready to smarten up its dowdy looks. Piping-hot water and steam percolating up through fissures in rocks fractured by seismic activity have been a welcome feature of the European landscape since Roman times.

http://ift.tt/1t6rsuf http://bit.ly/15KdByZ