"Global warming may be unleashing new sources of heat-trapping methane from layers of oil and gas that have been buried deep beneath Arctic permafrost for millennia. As the Earth's frozen crust thaws, some of that gas appears to be finding new paths to the surface through permafrost that's starting to resemble Swiss cheese in some areas, scientists said."

"President Trump on Wednesday nominated Sam Clovis, a former college professor and talk radio host who has challenged the scientific consensus that human activity has been the primary driver of climate change, to serve in the Agriculture Department’s top scientific post."

"Michael Dourson, President Donald J. Trump’s pick to head the Environmental Protection Agency’s office that oversees commercial chemicals and pesticides, is a board-certified toxicologist with decades of experience in risk assessment. Dourson’s close ties to the chemical industry, however, have some environmental groups raising concerns about potential conflicts of interest."

"McMURDO STATION, Antarctica — The American research station on the edge of this frozen continent may look like a mining camp in the wilderness, but it is actually one of the glories of American science."

"A U.S. Geological Survey program coordinator has sent an alert to colleagues around the world, warning that the Trump administration's proposed 2018 budget cuts, if approved, will undermine important data-gathering programs and cooperative studies in areas including forests, volcanoes, flooding, wildfires, extreme precipitation and climate change."

"The House defeated an amendment to a defense policy bill Thursday that would have blocked a Department of Defense study into the impacts of climate change on national security."

"The appointment of fisheries biologist Chris Oliver to lead NOAA Fisheries — the agency within the National Oceanic and Atmospheric Administration that is charged with sustainable management of commercial fisheries worth more than $140 billion — represents a striking departure from the Trump administration’s scientific and environmental personnel and policy choices."

"The U.S. Environmental Protection Agency is in the early stages of launching a debate about climate change that could air on television – challenging scientists to prove the widespread view that global warming is a serious threat, the head of the agency said."

"A 'biological annihilation' of wildlife in recent decades means a sixth mass extinction in Earth’s history is already well underway and is more severe than previously feared, according to new research."

"U.S. EPA and the Army Corps of Engineers are disputing their own economic analysis of the 2015 Clean Water Rule, now saying most benefits they previously ascribed to the Obama-era regulation can no longer be quantified."