"President Barack Obama has vowed to tackle climate change in his second term, but so far has not acted to strengthen a tool that does not require backing from Congress - the National Environmental Policy Act."

"Just a day before President Obama announced he would only approve the Keystone XL pipeline if it 'does not significantly exacerbate the climate problem,' six environmental groups quietly lodged a protest with the State Department charging it would do exactly that."

"[Tuesday's] Supreme Court decision significantly expanding the rights of property owners to challenge the terms of land-use permits has puzzled environmental law experts and has liberal groups accusing the conservative justices of judicial activism."

"Sen. Joe Manchin (D-W.Va.) blasted President Obama's proposals to address climate change, saying new regulations on power plants would unfairly burden the coal industry."

"President Obama set a high bar for approval of the controversial Keystone XL pipeline, declaring for the first time that he would let the project go forward only if it does not 'significantly increase' emissions of greenhouse gases."

"WASHINGTON -- President Obama, declaring that 'Americans across the country are already paying the price of inaction,' announced sweeping measures on Tuesday to reduce greenhouse gas pollution and prepare the nation for a future of rising temperatures."

"For renewable energy supporters, this was supposed to be a year of statehouse setbacks."

"President Obama will invoke his executive authority Tuesday by undertaking a slew of measures aimed at curbing climate change and its impacts, from imposing the first carbon limits on existing power plants to requiring all federal projects to withstand rising seas and more intense storms."

"President Obama will announce his intention to limit greenhouse gas emissions from existing power plants, increase appliance efficiency standards and promote renewable energy development on public lands in a speech Tuesday outlining his plan to use executive powers to address climate change."

"Republicans in the U.S. House of Representatives made manifest yesterday how much they dislike President Barack Obama's clean-energy agenda as a House spending panel voted for massive cuts in clean-energy research."