In its June 2009 report, Petroleum, Pollution and Poverty, Amnesty said independent environmental and oil experts estimated between nine million and 13 million of barrels had leaked in the five decades of oil operations.

CNN: Nigerians angry at oil pollution double standards

The Movement for the Emancipation of the Niger Delta (MEND) is an insurgent group that demands compensation from petroleum companies for the pollution and deaths they have caused.

CENTERFORSECURITYPOLICY: Nigeria in flux

The Executive Order commits Federal agencies to lead by example toward a clean energy economy, and sets targets to reduce greenhouse gas pollution, increase energy efficiency, reduce fleet petroleum consumption, conserve water, reduce waste, support sustainable communities, and leverage Federal purchasing power to promote environmentally-responsible products and technologies.

WHITEHOUSE: Browse White House visitor logs

Occidental Petroleum, for example, is involved in a major human rights and environmental contamination lawsuit regarding the pollution of indigenous land and the Amazon River.

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