BEND, Ore. — This summer’s heat scorched Oregon trees — maybe worse than ever before — and scientists are beginning to piece together what that means for the trees’ long-term health.

On Aug. 13, 1842, Charles Preuss — the cartographer on John Fremont’s mapping expedition of the Oregon Trail from the Missouri River to the Continental Divide — set up his materials deep in the Rocky Mountains and sketched the scene before him.

LOS ANGELES — Lightning-sparked wildfires killed thousands of giant sequoias this year, leading to a staggering two-year death toll that accounts for up to nearly a fifth of Earth’s largest trees, officials said Friday.

Grand Targhee Resort announced on Nov. 22 that the opening day of its 53rd season will be Wednesday, Nov. 24 at 9 a.m.

The reduction of harmful ground-level ozone across most of the U.S. over the past several decades has been an air pollution success story. But in some parts of the country, especially in the heavily populated mountain valleys of the West, the odorless, colorless gas has remained stubbornly d…

SALEM, Ore. (AP) — The council of a small Oregon city has approved a deal with Google that will enable the technology giant to build two more water-guzzling data centers there, though some residents worry about drought and secrecy.

JOPLIN, Mont. (AP) — Federal officials sent a team of investigators from the National Transportation Safety Board to the site of an Amtrak derailment in north-central Montana that killed three people and left seven hospitalized Sunday, officials said.

POCATELLO — Idaho State University started its school year on Monday with vaccinations front of mind, as an effort to fend off COVID-19 has turned to cash incentives for vaccinated students and weekly testing for the unvaccinated.

LAME DEER, Mont. — Wildfires in Montana threatened rural towns and ranchland Friday and victims of a California blaze returned to their incinerated community, even as the U.S. West faced another round of dangerous weather and smoke pollution fouled the air.

ALTA, Wyo. (AP) — Standing at the edge of a mountain meadow, Mike Whitfield explained to a group of journalists, activists and backcountry skiers how the slopes of Teton Canyon are important habitat for far more than just bighorn sheep.

A Canyon County resident over age 50 has been confirmed as suffering from the dangerous, neuroinvasive form of West Nile Virus, and officials are warning Treasure Valley residents to drain standing water left from recent rains to avoid breeding mosquitoes that can carry the virus.

SHELTON, Wash. — Tribal leaders continued to voice a united front for salmon recovery in the Snake River Basin and across the Pacific Northwest on Thursday as the two-day Salmon and Orca Summit came to a close here.

Several fair food vendors who regularly appear at the Eastern Idaho State Fair will be stopping by Idaho Falls in August for the East Idaho Fair Food Tour 2021.

SPOKANE, Wash. (AP) — The way Darin Watkins sees it, the real estate boom in the once-sleepy Spokane, Washington, metropolitan area is a numbers problem. Far too many people are moving in, far too few homes are being built and prices have skyrocketed.

YELLOWSTONE NATIONAL PARK, Wyo. (AP) — A 37-year-old Maine man has been sentenced to 15 days in jail for running onto Yellowstone National Park’s Old Faithful geyser multiple times while wearing a raccoon-skin hat and waving an American flag.

POCATELLO — After being ejected from a rollover crash on Interstate 15 in Pocatello and surviving over a week wandering the Gate City area foothills amid an exhausting heat wave, a 3-year-old pit bull was reunited with her owner early Friday morning.

BOISE, Idaho (AP) — U.S. officials and a sheep industry group have filed notices to appeal a federal court ruling involving an eastern Idaho sheep research facility long targeted by environmental groups concerned about the potential harm to grizzly bears and other wildlife.

SALEM, Ore. (AP) — The grim toll of the historic heat wave in the Pacific Northwest became more apparent as authorities in Canada, Washington state and Oregon said Wednesday that they were investigating more than 100 deaths likely caused by scorching temperatures that shattered all-time records.

SALT LAKE CITY (AP) — Many Americans aching for normalcy as pandemic restrictions end are looking forward to traditional Fourth of July fireworks. But with a historic drought in the U.S. West and fears of another devastating wildfire season, officials are canceling displays, passing bans on …

SALT LAKE CITY — Top leaders from the The Church of Jesus Christ of Latter-day Saints announced $9.25 million in new educational and humanitarian projects Monday as they seek to build on an alliance formed with the NAACP in 2018 as part of the faith’s efforts to improve race relations.

SEATTLE (AP) — Despite recent guidance from federal and state officials, the top health official in Washington’s most populous county urged people Thursday to keep wearing face masks in public, indoor settings.

CANNON BEACH, Ore. (AP) — The sand was packed on a recent sunny day at this upscale beach town on Oregon’s coast, but signs of the state’s cautious approach to the pandemic were still everywhere. Almost all the beachgoers wore masks — those that didn’t got nasty looks — and lines for a seat …

Average temperatures are rising in the Greater Yellowstone Area, resulting in less snow, earlier runoff and major economic implications in the western headwaters region, according to a newly released climate study. The changes threaten to upset traditional land uses and commerce for a region…

BOISE — Two new variants of the novel coronavirus (SARS-CoV-2), including one that may be more infectious than current variants in Idaho, have been discovered in wastewater samples from three Ada County cities, Central District Health announced Wednesday.