Heat

Symptoms can range from anxiety and feelings of helplessness to post-traumatic stress disorder and increases in violence and suicide, according to research from Canada's Centre for Addiction and Mental Health.

High temperatures and a poor snowpack led to a lackluster winter for nearby ski resorts. But according to experts and trail users, those conditions could have consequences for summer sports, too.

Dozens of daily high records were broken from July 11 through 15 across the state, with Worland and Clark hitting 111 degrees on Monday.

Fish go belly up following a weekend heatwave.

High temperatures gripping large portions of the west are exacerbating poor air quality.

This year’s already strong El Niño is strengthening, a trend with potentially significant implications for the intense – and now tragic – fire season.

“Dangerously hot conditions” are forecast, with temps likely to top triple digits.

Longer wildfire seasons can blanket communities in smoke. Summer heat records continue to rise. Drought remains a persistent concern for water supplies, agriculture and ecosystems.

At night, temperatures are often cooler and the air is wetter, which gives wildland firefighters a long window to make up significant ground when trying to suppress blazes. But that pattern is breaking down, a trend driven by human-caused climate change, according to a new study.

The federal government shifts away from workplace inspections. Meanwhile some states have their own workplace rules to address heat.