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Parts of the Arctic tundra are now releasing more planet-warming gases than they absorb, an international study published Tuesday suggests, upending a millennia-old trend and raising concerns about a climate change feedback loop.

DAVOS, Switzerland (AP) — As expected, day two of the World Economic Forum at Davos , Switzerland witnessed strong responses to U.S.

DAVOS, Switzerland (AP) — As expected, day two of the World Economic Forum at Davos, Switzerland witnessed strong responses to U.S.

OTTAWA — The three frontrunners in the Liberal leadership race have all backed away — to one degree or another — from the Liberal government's keystone climate policy in a bid to take a major Conservative line of attack off the table.

WASHINGTON — U.S. President Donald Trump suggested his administration could move ahead with with 25 per cent across-the-board tariffs on Canadian imports on Feb. 1.

Millions of people across the northern Gulf Coast braced Tuesday for a rare winter storm that's expected to scatter heavy snow, sleet and freezing rain around the Deep South as a blast of Arctic air plunges much of the eastern U.S.

LOS ANGELES (AP) — A second day of ferocious winds were forecast for Tuesday in Southern California where firefighters remained on alert and extreme fire weather raised the risk of new wildfires two weeks after two major blazes still burning in the L

President Donald Trump signed an executive order Monday temporarily halting offshore wind lease sales in federal waters and pausing the issuance of approvals, permits and loans for both onshore and offshore wind projects.

JUNEAU, Alaska (AP) — President Donald Trump issued an executive order Monday calling for North America’s tallest peak — Denali in Alaska — to be renamed Mount McKinley, reviving an idea he’d floated years ago and drawing a rebuke from Alaska’s Repub

LOS ANGELES (AP) — Firefighters quickly extinguished several brush fires that erupted Monday in Southern California amid windy and dry conditions.