... 91–92, 101 hot springs and geysers 72, 72, 101 , 103 , 109 humidity 135hydrology 132, 133IIceland 72, 103 , 103 , 107 , 107 , 109 , 110 111, 124Idaho 111, 121, 124Ide, Satoshi 176, 180Illinois earthquake ... (Richter-Gutenberg scale) 9 10, 163, 164–165ris 55FOS _Earth Science_DC.indd 210 2/8 /10 10:59:59 AM earth ScienceS 204205Main categories include Fossils & Ruins, Mind & Brain, Earth ... 98–127benets and potential of 107 109 drilling 109 –112earthquakes and 122–123FOS _Earth Science_DC.indd 207 2/8 /10 10:59:58 AMindex209Italy, Larderello geothermal power 102 , 124JJaggar, omas...