"Federal courts will kick off 2020 with arguments and hearings in cases that could more clearly define federal authority over the oil, gas and electricity sectors and agencies' duty to consider environmental harms from energy use and development."

"With rising global temperatures threatening to limit the skiing season and even warm some resorts out of existence, major ski companies are turning to their customers for help in the fight against climate change. Their goal: turn millions of snow-lovers into climate voters."

"The Interior Department is moving to formally define "habitat" in the Endangered Species Act, part of an anticipated second wave of changes to the bedrock conservation law under the Trump administration."

"As the state of Virginia prepared for a major bridge and tunnel expansion in the tidewaters of the Chesapeake Bay last year, engineers understood that the nesting grounds of 25,000 gulls, black skimmers, royal terns and other seabirds were about to be plowed under."

"In just three years, the Trump administration has diminished the role of science in federal policymaking while halting or disrupting research projects nationwide, marking a transformation of the federal government whose effects, experts say, could reverberate for years."

"Two environmental groups concerned the Trump administration won’t defend an Obama administration-era policy on sage grouse protections are seeking to intervene in a lawsuit filed by Idaho ranchers."

"A string of climate-related disasters that crippled the strategic capability of multiple U.S military bases in recent years has exposed the military's vulnerability to extreme weather, putting a spotlight on its failure to prepare and the consequences to national security."

"A Canadian gold-mining company allowed by the Trump administration to write its own assessment of the environmental impact of its proposed project on federal lands has lost a round in court against the Nez Perce tribe in Idaho."

"In its latest move to roll back energy efficiency measures, the Department of Energy (DOE) announced Friday that it would block a measure designed to require more efficient lightbulbs, arguing the policy would be too expensive for consumers."

"Some farm groups and farm-state lawmakers expressed anger at the Trump administration Thursday over final ethanol rules that they said failed to uphold the president’s promises to the industry."