Kauai Hindu Temple under construction on Hawaii Island fashioned a foundation in which 60% of the usual portland cement is replaced with fly ash. The all stone Iravian Temple in Kauai , Hawaii , is dedicated to Lord Shiva and the construction which began in 1990 is still in progress. Hinduism Today Magazine reports ‘To create the two 6,500sf pads for the stone temple, the architects used only 80 tons of cement, instead of the 230 tons of cement and 75 tons of steel required with conventional reinforced concrete.’ With cement production now contributing more than 6% of global greenhouse gases and growing fast, alternative construction methods are mandatory. By mixing in some fly ash, we could reduce cement use by half. Prof Mehta, an expert on concrete and fly ash and who helped in the construction, says, ‘This demonstrates a revolutionary method of concrete construction which, if widely adopted could save millions of dollars a year, create structures to last far longer than th