Battle with Republicans looms as agency edges forward with emissions crack down
Reporting rules could be delayed until 2014 after EPA acknowledges concerns over disclosure of trade secrets
Car and boat manufacturers launch legal action challenging EPA decision allowing higher blends of ethanol
Rogue Democrat insists he will not drop plans to suspend the EPA's right to regulate greenhouse gas emissions
Court of Appeals court rejects complaints from businesses challenging EPA's right to regulate emissions
Watchdog says ruling on whether or not E15 can be used by older vehicles will have to wait until new year
EPA report finds rapid improvement in fuel economy has delivered consistent fall in emissions over last six years
Controversial new rules expected to provide boost to energy efficiency and biomass sectors
Lisa Jackson rejects allegations that new EPA rules will damage the economy