Agence France-Presse: Ratings agency Moody’s lowered its outlook on BP’s debt to “negative” from “stable” on Wednesday due to “considerable uncertainty” over the group’s finances following the Gulf of Mexico oil spill. “Moody’s action reflects the considerable uncertainty associated with the financial liabilities and clean-up costs that BP may incur as a result of the oil spill,” the agency said in a statement. “Moody’s notes the comprehensive response effort put in place by BP with the support of …