With new plans by Joe Biden and Elizabeth Warren, Democratic presidential candidates are making climate change a central issue in the primary and cranking up ambitions for acting on climate.

"Environmental Protection Agency (EPA) head Andrew Wheeler accused the media Monday of misleading the public by not highlighting the agency’s important environmental achievements."

"The Trump administration wants harsher penalties for people who interfere with the operation or construction of pipelines, joining states and the pipeline industry in an effort opposed by civil rights groups and environmentalists."

"The U.S. Congress on Monday approved legislation providing $19.1 billion in emergency funding for disaster recovery efforts throughout the United States, including Puerto Rico, sending it to President Donald Trump to sign into law."

"The U.S. Environmental Protection Agency was sued on Monday by a nonprofit over a recent directive banning many scientists from panels that advise the agency on scientific matters."

"Former Vice President Joseph R. Biden Jr., who has faced criticism from Democratic presidential rivals about his commitment to combating climate change, on Tuesday unveiled a plan centered on reinstating the climate policies of the Obama administration — but he included some unexpected proposals that would push significantly beyond what the previous White House achieved."

"The Trump administration is following through on a plan to allow year-round sales of gasoline mixed with 15% ethanol, though some say the move is undercut by a policy that gives oil refineries waivers allowing them to use reduced levels of the additive."

"EPA plans to quickly revamp its guidelines for evaluating whether environmental contaminants can cause cancer or other ailments, a move Trump administration critics fear is part of a broader effort to weaken the basis for regulating a wide range of pollutants."

"The Sierra Club on Thursday said it plans to have staff and volunteers back the efforts of 100 yet-to-be-selected campaigns across the country, making it the latest green group to commit significant resources to help elect candidates who vow to take action on climate change."

"Former Vice President Joe Biden is trailing most of his Democratic presidential competitors in a newly released ranking of climate records."