"President Donald Trump is getting his facts wrong when it comes to clean air in the U.S. In remarks Wednesday with Ireland’s Prime Minister Leo Varadkar, he insisted the U.S. has the “cleanest air in the world” and is “setting records environmentally.” That’s not the case. The Obama administration set the records for clean air in 2016, and air quality under Trump has worsened since then."

"America's biggest cities could avoid hundreds of deaths during future heat waves if the world reduces its greenhouse gas emissions enough to meet the Paris climate agreement goals, a new study shows."

"The chief of the U.S. Forest Service is warning that a billion acres of land across America are at risk of catastrophic wildfires like last fall's deadly Camp Fire that destroyed most of Paradise, Calif."

"Washington Gov. Jay Inslee said Wednesday the Democratic National Committee informed him it will not dedicate one of its presidential primary debates to the issue of climate change."

"Conservative media organization National Review is taking its legal battle against climate scientist Michael Mann to the Supreme Court — the latest push in a case involving climate science and the First Amendment."

"Over the past few months, graduate students and researchers at California’s Moss Landing Marine Laboratories have scoured coastal waters, collecting seaweed in the hopes of finding a native species that could help gassy cows."

"Deforestation of the Amazon rainforest in Brazil sped up in May to the fastest rate in a decade, according to data from an early-warning satellite system, as experts pointed to activity by illegal loggers encouraged by the easing of environmental protections under President Jair Bolsonaro."

"Three federal judges heard arguments Tuesday about whether young people have a constitutional right to be protected from climate change. In the lively, hourlong hearing, the judges, from the Court of Appeals for the Ninth Circuit, pushed skeptically on the arguments of both sides."

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.