"Gulf Oil Full of Methane, Adding New Concerns"

"NEW ORLEANS – It is an overlooked danger in oil spill crisis: The crude gushing from the well contains vast amounts of natural gas that could pose a serious threat to the Gulf of Mexico's fragile ecosystem.

The oil emanating from the seafloor contains about 40 percent methane, compared with about 5 percent found in typical oil deposits, said John Kessler, a Texas A&M University oceanographer who is studying the impact of methane from the spill.

That means huge quantities of methane have entered the Gulf, scientists say, potentially suffocating marine life and creating 'dead zones' where oxygen is so depleted that nothing lives.

'This is the most vigorous methane eruption in modern human history,' Kessler said."

Matthew Brown and Ramit Plushnick-Masti report for the Associated Press June 18, 2010.