National (U.S.)

"A new poll finds an overwhelming majority of Americans support an international agreement to cut planet-warming emissions."

"A massive die-off of pine trees in the southern Sierra Nevada caused by beetles attacking drought-stressed trees is turning forests brown and creating a fire tinderbox."

"In a highly anticipated announcement, the United States will offer a roughly 28 percent emissions cut as its contribution to a major global climate treaty nearing the final stages of negotiation, according to people briefed on the White House's plans."

"An anticipated cascade of litigation targeting the Obama administration's new drilling rule gained speed yesterday as a Wyoming lawsuit became the second legal challenge on court dockets so far."

"Sens. Rob Portman (R-Ohio) and Jeanne Shaheen (D-N.H.) squeaked in a vote early Friday morning on their energy efficiency bill after the Senate ended an hours-long marathon on the budget."

"The Obama administration is taking fresh aim at antibiotic-resistant superbugs, a growing cadre of microscopic foes that threatens to undermine public health and economic security throughout the world."

"If a new rule takes effect, about 95 percent of all pipelines would be subject to stricter safety testing because of their age, location and other factors."

"An environmental activist group has filed a legal petition with the U.S. Department of Agriculture seeking new rules that would enhance job protection for government scientists whose research questions the safety of farm chemicals."

"A yearlong investigation by government scientists has concluded that a major accident at a nuclear waste dump was caused by the wrong brand of cat litter."

"Ted Cruz, the junior U.S. senator from Texas and first official contender for the 2016 Republican presidential nomination, compared people who think that the climate is warming to "flat-Earthers" and described himself as a modern-day Galileo in an interview with the Texas Tribune."