LE BOURGET, France (AP) — Talks on a universal climate pact shifted to a higher gear Monday with U.N. Secretary-General Ban Ki-moon urging governments to set off an "energy revolution" to rein in heat-trapping carbon emissions and avert disastrous global warming. Foreign and environment ministers joined the talks outside Paris after lower-level negotiators who met last week delivered a draft agreement with all crunch issues left unresolved. The talks are focused on reducing emissions of carbon dioxide and other greenhouse gases, primarily by shifting from oil, coal and gas to cleaner sources of energy.