Mongabay: In surveying the environmental damage unleashed from the BP oil spill, could we be missing the 800-pound gorilla in the closet? While oil poses undeniable ecological risks, methane (CH4) could prove daunting as well. As it turns out, crude which is destroying the Gulf of Mexico contains about 40 percent methane which may suffocate marine life and create vast “dead zones” where oxygen becomes so depleted that nothing is allowed to live. Methane is a colorless, odorless and flammable …