The bill made polluting oil companies responsible for all containment and clean-up costs.

WSJ: Obama's Political Oil Fund

Why is coal more polluting than oil?

FORBES: What Would Happen To The Current Fracking Activity And Subsequent Booms Generated If Oil $/bbl Were To Drop?

Wind farms are being planned as part of the UK and Welsh governments' push to produce more electricity from less polluting sources, and reduce the use of coal, oil and gas.

BBC: Mid Wales

On federal lands, Shell has been researching methods to cook oil out of the shale (basically oil-soaked rock) without mining it or polluting groundwater.

FORBES: OutFront

The grounding of the Sea Empress led to the polluting of the Pembrokeshire coast, with 70, 000 tonnes of crude oil.

BBC: Tug plan marks Empress disaster

Increasingly, experts see natural gas as the only economically feasible way to build a new, less-polluting, hydrogen-based economy--a vast market allowing the oil industry a second act at the center of a transportation revolution.

FORBES: Magazine Article

About 5, 000 gallons of oil has spilled into the River Lark in Bury St Edmunds, polluting a 2.5 mile stretch.

BBC: Abbey Gardens, Bury St Edmunds