"The Obama administration is expected to propose as soon as Tuesday the first-ever federal regulation to cut emissions of methane, a powerful greenhouse gas that contributes to global warming, by the nation’s oil and natural-gas industry, officials familiar with the plan said on Monday."

"The Obama administration is giving Shell permission to fully drill an exploratory well in the Arctic Ocean and burrow into potential oil-bearing rock thousands of feet below the seafloor that previously was off limits."

"YELLOWSTONE NATIONAL PARK, Wyo. — Even for a park with a history of unhappy encounters between people and wildlife, 2015 is shaping up as an eventful year for Yellowstone and its bison. Since mid-May, five visitors have been hurt — gored, trampled or tossed into the air — in run-ins with the park’s most famous residents."

"In the last few years, doctors in the southern U.S. have seen some strange diseases: Chagas disease, parasitic infections of the brain known as neurocysticercosis, dengue, the virus chikungunya and more."

"The Obama administration on Friday gave oil companies temporary permission to export a limited amount of oil to Mexico at a time when a glut is cutting into domestic petroleum profits and employment."

"The U.S. Environmental Protection Agency has tightened standards for the nation's landfills to reduce emissions of methane and other harmful air pollutants."

"Foes of the Obama administration's plan for cutting greenhouse gas emissions from the power sector have lodged their first formal challenge to the newly finalized Clean Power Plan, asking federal judges to postpone the rule's deadlines."

"More than a thousand residents in north-central Washington state fled their homes on Friday after a cluster of wildfires erupted around the town of Chelan, while fierce blazes blackened a swath of the drought-stricken U.S. West, officials said."

"The annual Burning Man festival received a permit to use federal land in Nevada’s desert after a clash over federal land managers’ expensive requests."

"When hurricane Katrina hit New Orleans in 2005 most residents evacuated safely. But thousands lost homes, careers, and the lives they had known. Since then, many seem to have recovered emotionally from the trauma. But some have not."