LA Times: Reporting from Anchorage — Alaska Gov. Sarah Palin acknowledged Tuesday that global warming was harming her state but said stepped-up natural-gas production could mitigate its effects. Speaking at a hearing before Interior Secretary Ken Salazar — the third of several he is holding across the country to consider renewed oil and gas leasing on the outer continental shelf — Palin said that relatively clean-burning natural gas could supplant dirtier fuels and slow the discharge of …