US unveils sweeping initiative to cut power plant pollution

President Obama has laid out plans for big reductions in pollution from American power stations.

The proposed regulations are a central part of the president's efforts to tackle climate change and reduce air pollution.

The energy industry will have to reduce carbon dioxide emissions by 30% by 2030, with the individual states deciding how to do this.

But many in the coal industry accuse him of waging a war on coal and say they will fight the regulations.

David Shukman reports.