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The CR ROM presentation will also be used for recruiting efforts at other dental schools . While they are distinct phenomena , summertime heat islands may contribute to global warming by increasing demand for air conditioning , which results in additional power plant emissions of heat-trapping greenhouse gases . I was situated right behind home plate , with an adjacent seat for Paul . " The PC attached to a mainframe then became known generically as an " intelligent workstation . When the collectors are warmer than the tank , the control turns on a circulator which circulates a heat-transfer fluid , usually water or a water-glycol mixture , through the collectors and back to the heat exchanger located in or adjacent to the storage tank . Installing cool roofs and cool pavements , and planting shade trees and vegetation are sensible steps that communities can take to decrease urban air temperatures and summertime energy use .