UNITED STATES/Washington, DC Did conservative elements in the White House provoke an Exxon front group to sue EPA to suppress a report on climate change? That's the question that two State Attorney Generals have asked US Attorney General John Ashcroft to investigate, after Greenpeace uncovered a routine email in a Freedom of Information Act request. In the email, Myron Ebell of the Exxon-funded Competitive Enterprise Institute writes to Phil Cooney, a senior official at the White House Council for Environmental Quality. He describes his plans to discredit an EPA study on climate change through a lawsuit. He states the...