"More than 50 world leaders are joining bankers, energy magnates and others Tuesday in Paris for a summit that President Emmanuel Macron hopes will give new momentum to the fight against global warming — despite U.S. President Donald Trump's rejection of the Paris climate accord."

"U.S. EPA Administrator Scott Pruitt is instructing agency officials to effectively drop enforcement of one key facet of the New Source Review program, in what could be a prelude to broad changes in the handling of air permits for both new plants and expansions of existing facilities."

"The head of the Federal Energy Regulatory Commission (FERC) is seeking a 30-day extension in the agency’s timeline to consider a proposal to prop up coal and nuclear power plants."

"The Trump administration will suspend a rule to limit methane leaks from oil and gas operations on federal land, but its true aim may be to kill the Obama-era requirement."

"Gusty Santa Ana winds and bone-dry conditions continued to stoke major wildfires in Southern California on Thursday as Ventura County fire officials said the battle there could last well over a week."

"New research says we should pay more attention to climate models that point to a hotter future and toss out projections that point to less warming. "

"Scientists at the Environmental Protection Agency will be free to publicly discuss their work from now on, Scott Pruitt, the agency’s administrator, has assured lawmakers who criticized the E.P.A. for preventing employees from presenting findings about climate change."

"Former President Barack Obama says cities, states and nonprofit groups have emerged as 'the new face of leadership' on climate change. He briefly spoke Tuesday to a summit of mayors from around the world gathered in Chicago to address concerns about climate change since President Donald Trump rejected the Paris climate accord. The mayors signed a charter that echoes portions of the 2015 Paris agreement."

"The American Petroleum Institute on Tuesday launched a voluntary program to cut emissions of the greenhouse gas methane from oil and gas operations, a move environmentalists said was not strong enough to adequately protect the climate."

"The Trump administration has terminated a cross-agency group created to help local officials protect their residents against extreme weather and natural disasters."