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Aspen, maple and other trees are about to turn vivid shades of gold, orange and crimson — but when? It depends on a range of factors, from drought to local temperatures.

The Board of Supervisors directed the chief administrative officer Wednesday to update the county's water and drought- management strategies, including sustainability efforts, and deliver a final report within the next year.

Newsom has a plan to speed up some construction projects throughout the state. But some lawmakers and environmental advocates fear his pan would benefit a project to build a giant tunnel to ship water to Southern California — a plan they oppose.

As the U.S. plans new mines for copper, lithium and other metals to use in green technologies, mining projects in the West could threaten scarce water supplies.

It's increasingly expensive and difficult to get home insurance, as losses rise from climate-driven disasters such as wildfires and hurricanes. And the solutions aren't always politically popular.

After days of smoky conditions caused by Canadian wildfires, some U.S. cities are looking to play it safe this Fourth of July with innovative alternatives to their fireworks displays.

Firefighters are working in extreme temperatures across the U.S. West and struggling to contain wildfires, the largest burning in California and Oregon, as another heat wave baked the region, straining power grids.

In Chad, one of the continent's poorest countries, rising food and fuel prices — and drought — have left many hungry and unable to afford the limited food that is for sale.

Millions of dead fish have been found dead in an Australian river due to dangerously low oxygen levels in the water caused by receding flood waters, government officials said.

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?