... 68–69,71,81,91–92, 101 hotsprings and geysers 72, 72, 101 , 103 , 109 humidity 135 hydrology 132,133 I Iceland 72, 103 , 103 , 107 , 107 , 109 , 110 111,124 Idaho 111,121,124 Ide,Satoshi 176,180 Illinoisearthquake ... (powerstations) 102 107 , 107 geysers and hotsprings 72,72, 101 , 103 , 109 heatpumps 112 limitationsof 114–119, 123 MITinterdisciplinary panelon 116–118 opportunitiesfor 103 , 106 107 GeothermalResources ... and the Discovery of Earth s Antiquity Cambridge, Mass.: Perseus FOS _Earth Science_DC.indd 201 2/8 /10 10:59:56 AM 0 earth ScienceS Publishing, 2003 Hutton, an 18th-century Scottish farmer and...