The New Orleans-area citizens' group Louisiana Bucket Brigade has been conducting a survey of the Gulf oil spill's possible health effects that may pave the way for larger and more scientific federal studies yet to be started.

"People and businesses seeking a lump-sum settlement from BP’s  $20 billion oil spill compensation fund  will most likely have to waive their right to sue not only BP, but also all the other major defendants involved with the spill, according to internal documents from the lawyers handling the fund."

"The company that owned the oil rig that exploded in the Gulf of Mexico is accusing BP of withholding critical evidence needed to investigate the cause of the worst offshore oil spill in U.S. history, according to a confidential document obtained by The Associated Press. BP called the claims a publicity stunt."

"A 22-mile-long invisible mist of oil is meandering far below the surface of the Gulf of Mexico, where it will probably loiter for months or more, scientists reported Thursday in the first conclusive evidence of an underwater plume from the BP spill."

"White House claims that the worst of the BP oil spill was over were undermined [Thursday] when a senior government scientist said three-quarters of the oil was still in the Gulf environment and a research study detected a 22-mile plume of oil in the ocean depths."

"For 40 days, flares burned 500,000 pounds of toxic chemicals over BP's Texas City refinery. Yet residents didn't know until weeks later that the flare released 17,000 pounds of cancer-causing benzene."

"Lawmakers have criticized BP PLC for attempting to 'muzzle' scientists researching the Gulf of Mexico oil spill with confidentiality agreements and blocking the 'open exchange of scientific data and analysis.' But the government is employing similar tactics itself."

"Researchers describe 'a constellation' of oil droplets mixed with sediment. Phytoplankton, the base of the marine food web, is found to be in poor health nearby."

"Researchers at the University of Georgia said Monday that more than three-quarters of the oil spilled in the Gulf of Mexico following the Deepwater Horizon drilling-rig explosion could still be in the Gulf threatening fisheries and marine life, disputing government statements that much of the oil had been safely dispersed."