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" Californians and the rest of the nation are at the mercy of a price roller-coaster for which the oil companies are running out of phony excuses , " said Dugan . And when projects flopped , " we were really good at pointing fingers , " says Toni Zimmerman , who was named acting CIO when Cosgrave left . Their trunks range in circumference from about 8 inches to 40 inches , he said . " If we want our children to enjoy our national parks and wildlife areas the way we do , policymakers must pass measures to reduce heat-trapping gas emissions , " said Katherine Silverthorne , director of WWF 's U.S. Climate Change Program . " Our products span equipment for domestic use to large and highly technical industrial water treatment plants , " said Henrik Nielsen , resident manager in Tanzania of Merrywater Limited . " People can see the damage happening just miles from where the Congress is debating whether or not to do something about greenhouse gas emissions , " said Silverthorne .