Environmental Groups Praise Proposed Emissions Standards The Bush administration proposes strict new controls on off-road diesel emissions. Some environmental groups that have been critical of the administration's past environmental record praise the proposed standards. NPR's David Molpus reports.

Environmental Groups Praise Proposed Emissions Standards

Environmental Groups Praise Proposed Emissions Standards

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The Bush administration proposes strict new controls on off-road diesel emissions. Some environmental groups that have been critical of the administration's past environmental record praise the proposed standards. NPR's David Molpus reports.