In one of the Bush administration’s first official statements on global warming, U.S. EPA Administrator Christie Todd Whitman said this week that the administration may push to place limits on carbon dioxide emissions from power plants. “There is no question,” she said, “that global warming is a real phenomenon, that it is occurring.” She said the administration might support legislation that would regulate CO2 for the first time as part of a broader plan to regulate other pollutants from the burning of fossil fuels. President Bush is on the record as opposing the Kyoto treaty on climate change.