In the run-up to December's climate talks in Paris, the battle over hard targets for financial aid to poor countries has emerged as a potential obstacle to a final treaty.

"The legal onslaught against the Obama administration's Clean Power Plan kicked off [Friday] as 25 states, industry and labor groups challenged the rule in court."

"After an investigation found that ExxonMobil has been funding climate-denying organizations — despite the findings of its own scientists on climate change—the world’s fourth-largest oil company is now going after the journalists who revealed it."

"Collaborating with the Bush-Cheney White House, Exxon turned ordinary scientific uncertainties into weapons of mass confusion."

"Environmentalists and energy companies are trying to influence the Obama administration’s plan for thwarting an oil industry practice of venting and burning natural gas at some wells."

"BONN -- More funds to help poor nations cope with climate change will be the make-or-break issue when a Paris summit seeks a U.N. deal in December to slow global warming, the main group of developing nations said on Thursday."

"OPEC members Iran and Saudi Arabia, the top greenhouse gas emitters yet to submit national strategies for tackling climate change, say they will do so before a U.N. summit in December in a sign of widening participation even by oil producers."

"As the Obama administration's carbon rules become final, states weigh fighting vs complying. ‘We can’t count on winning the lawsuit,’ one official says."

"As the world tries to shift away from fossil fuels, the energy industry is turning to what seems to be an endless supply of renewable energy: wood. In England and across Europe, wood has become the renewable of choice, with forests — many of them in the U.S. — being razed to help feed surging demand. But as this five-month Climate Central investigation reveals, renewable energy doesn’t necessarily mean clean energy. Burning trees as fuel in power plants is heating the atmosphere more quickly than coal."