Are you reading this on a Mac? D’oh. A new Greenpeace report ranks Apple’s environmental record worst among 14 major electronics firms, based on use of hazardous chemicals in production and efforts to recycle products at the end of their lives. The iPod manufacturer was i-poohed for continuing to use several types of harmful chemicals, including PVC and some brominated flame retardants, and for the lack of a comprehensive recycling program for its products. Little-known Chinese PC maker Lenovo got top honors in the Greenpeace report, and was lauded for letting all of its customers give back their computers for recycling. Nokia, Sony Ericsson, Dell, and Samsung filled out the top five. Apple disputed the rotten report and claimed through a spokesperson that it “has a strong environmental track record and has led the industry in restricting and banning toxic substances such as mercury, cadmium, and hexavalent chromium, as well as many [brominated flame retardants].” How’s that for biting back?