Global Warming Initiative Sen. John McCain (R-AZ) and Sen. Joseph Lieberman (D-CT) challenge their colleagues to support limits on gases contributing to climate change. The bill would affect power plants, manufacturers, petroleum refiners and other large-scale commercial sources. Stiff opposition is expected from many in Congress, the Bush administration and industry groups. NPR's Richard Harris reports.

Bipartisan Initiative Would Slash Emissions

Bipartisan Initiative Would Slash Emissions

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Sen. John McCain (R-AZ) and Sen. Joseph Lieberman (D-CT) challenge their colleagues to support limits on gases contributing to climate change. The bill would affect power plants, manufacturers, petroleum refiners and other large-scale commercial sources. Stiff opposition is expected from many in Congress, the Bush administration and industry groups. NPR's Richard Harris reports.