EPA to tighten limits on smog-causing ozone

The move fulfills a long-delayed campaign promise by President Obama but sets up a fresh confrontation with Republicans already angry about the administration's plans to curb carbon pollution from coal-fired power plants.

EPA to tighten limits on smog-causing ozone

The move fulfills a long-delayed campaign promise by President Obama but sets up a fresh confrontation with Republicans already angry about the administration's plans to curb carbon pollution from coal-fired power plants.

Load More Articles