Environment supporters attend a rally after a regional environmental commission approved a hydro-power dam project, in Valparaiso city, about 121 km (75 miles) northwest of Santiago, May 10, 2011. Chilean environmental regulators yesterday gave the green light to the divisive $3.5 billion HidroAysen hydro-power dam project that promises to help ease energy squeezes, but opponents say it will ruin pristine Patagonian valleys. The placard reads, "Open your eyes , No to Hidroaysen" [Photo/Agencies]
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