"California's reign as the U.S. state with the worst air pollution continues, with Los Angeles again the nation's smoggiest metro area, according to a new report released Wednesday."

"The National Hockey League said on Monday it would purchase carbon credits to offset airline emissions of heat-trapping greenhouse gases during the Stanley Cup playoffs."

"The climate change primary officially began last night. The starting gun was a marathon session of five town halls that CNN hosted with five of the big names running as Democrats for president. In most of the hourlong sessions, global warming was a major theme, and — more significantly — all five candidates started to sketch out how their visions on climate change would differ from those of their rivals."

"Climate change creates winners and losers. Norway is among the winners; Nigeria among the losers."

"Virginia regulators have voted to join a regional carbon cap-and-trade program, becoming the first Southern state to do so. The effort could lead to a 30 percent reduction in carbon emissions from the state’s largest power plants. But there’s a hitch."

"Nevada’s governor signed a bill Monday requiring electricity companies to get half of their energy from renewable sources by 2030."

"Former New York City Mayor Michael Bloomberg will donate $5.5 million to the United Nations Climate Change Secretariat, the second year in a row he has provided funding to make up for lapsed commitments under the Trump administration."

"Greenland, home to Earth’s second-largest ice sheet, has lost ice at an accelerating pace in the past several decades — a nearly sixfold increase that could contribute to future sea-level rise, according to a new study based on nearly a half-century of data." "The ice sheet has the potential to raise sea levels by more than 20 feet, were it all to melt someday."

"More than 80% of parents in the U.S. support the teaching of climate change. And that support crosses political divides, according to the results of an exclusive new NPR/Ipsos poll: Whether they have children or not, two-thirds of Republicans and 9 in 10 Democrats agree that the subject needs to be taught in school."