And more than 800, 000 gallons of chemical "dispersants" sprayed onto the oil in a frantic attempt to keep the bulk of it offshore pose little-understood risks to organisms in the Gulf's depths, scientists and government officials say.

WSJ: Gauging Harm to Ecosystem Could Take Years

Customers who sign up can bulk buy their heating oil and electricity together in a package.

BBC: Oxfordshire community energy scheme moves to dual fuel

The firm, which concentrates on trading oil, metals, ores and bulk commodities, may in the future consider floating Puma Energy, its rapidly expanding fuel station business.

FORBES: Riding Glencore Wave, Commodity Trader Claude Dauphin Becomes a Billionaire

Her club in Hampstead Marshall now has more than 400 members and she bulk buys oil twice a month at a cut price.

BBC: Rural oil bulk-buying clubs help 'fuel poor'

The burning of fossil fuels, such as coal for electricity and oil for gasoline, has caused the overwhelming bulk of the man-made increase in carbon in the air, scientists say.

NPR: Experts: CO2 Record Illustrates 'Scary' Trend

Yukos Oil has been broken up and sold to Russian state owned energy companies, with the bulk of those assets acquired at a discount by Rosneft, the largest oil company in Russia.

FORBES: Connect

The wholesalers, such as Hong Kong-based Offshore Incorporations Ltd (OIL), sell companies to legal and accounting firms, banks, corporations and also (often in bulk) to web-based resellers.

ECONOMIST: Company formation