"Colorado regulators approved groundbreaking controls on emissions from oil and natural gas operations after an unusual coalition of energy companies and environmentalists agreed on measures to counter worsening smog."

"A Democratic fundraiser last week at billionaire Tom Steyer’s home amounted to a summit between Washington’s liberal elite and San Francisco’s climate intelligentsia."

"Small volcanic eruptions help explain a hiatus in global warming this century by dimming sunlight and offsetting a rise in emissions of heat-trapping gases to record highs, a study showed on Sunday."

"WASHINGTON — President Obama in recent days has been announcing muscular executive actions to address climate change, making good on his promise to act on pressing problems “with or without Congress.” On Monday, the Supreme Court will consider the limits of that approach, in a case on greenhouse gas emissions."

"MATHER, Calif. -- Describing the drought as a 'call to action,' Gov. Jerry Brown joined Democratic legislative leaders Wednesday to unveil a $687.4 million package aimed at helping California get through its water crisis and better prepare for the next one."

"Bitter cold in the United States might appear to contradict the notion of global warming, but with Britain's wettest winter and Australia's hottest summer, extreme weather events have pushed climate change back on the political agenda."

"In delivering aid to drought-stricken California last week, President Obama and his aides cited the state as an example of what could be in store for much of the rest of the country as human-caused climate change intensifies. But in doing so, they were pushing at the boundaries of scientific knowledge about the relationship between climate change and drought."

"FRESNO, Calif. — President Obama arrived in the heart of California’s parched farmland on Friday afternoon to offer tens of millions of dollars in federal assistance to the state, where the lack of rain and snow this winter has led to the severest drought in its modern history."

"U.S. Secretary of State John Kerry warned Indonesians on Sunday that man-made climate change could threaten their entire way of life, deriding those who doubted the existence of 'perhaps the world's most fearsome weapon of mass destruction'."

"WASHINGTON — The sign is ubiquitous on city buses around the country: 'This bus runs on clean burning natural gas.' But a surprising new report, to be published Friday in the journal Science, concludes that switching buses and trucks from traditional diesel fuel to natural gas could actually harm the planet’s climate."