Temperatures will linger in the triple digits for parts of California, Oregon, Washington, Idaho and Montana this week, with little relief coming at night.

A new report from NOAA and NASA confirms that last month was the hottest July ever recorded, driven to new heights by human-caused climate change.

The ruling follows a first-of-its-kind trial in the U.S., adding to a small number of legal decisions around the world that have established a government duty to protect citizens from climate change.

The study assigned subjects to one of two rooms: 68 degrees or a sweat-inducing 86 degrees. They played a computer game that can bring out the worst in human nature. What are the real-world lessons?

Hawaii's siren system is considered the largest in the world. But they weren't activated ahead of the Maui fires. Experts say the alert could have helped residents have more time to prepare.

In Maui, NPR joined a tour boat operator to see the grassroots initiative the local surfing community and neighbors started to fill in gaps not currently being filled by official channels.

Hawaii Gov. Josh Green said he has ordered a comprehensive review to understand the actions taken before, during and after last week's wildfires on Maui.

Thousands of renewable projects are waiting to connect to the grid, but there aren't enough transmission lines. Some tech companies have faster and cheaper solutions.

In Maui, a fast-moving wildfire decimated the town of Lahaina. Historical losses includes one of the largest banyan trees in the U.S.

Turns out diners are more likely to get on board for altruistic reasons rather than health. That's what one hospital learned after it pledged to reduce food-related greenhouse gas emissions.

The Atlantic hurricane season is now projected to have "above-normal level of activity" according to an updated forecast from the National Oceanic and Atmospheric Administration.

Biden's declaration will provide federal funding for recovery. Hawaii's lieutenant governor says it could take years to rebuild the damaged infrastructure.

The Biden administration is moving ahead with what could be the largest national marine sanctuary in the continental U.S. A Native American tribe is hoping to be partners in managing it.

The Environmental Protection Agency’s plan to reduce greenhouse gas emissions from fossil fuel power plants has been endorsed by a crush of environmental advocates in Georgia.

Hundreds of homes, buildings and structures have been destroyed in the historic town of Lahaina.