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Labor groups say Arizona isn't moving fast enough to establish new protections for people whose work exposes them to the state's sizzling high temperatures.

California, Arizona and Nevada are facing big cuts in water from the Colorado river. Water managers' responses to the federal government's restrictions are now in.

More than 20 states have "trigger laws," which will ban or severely restrict abortion if Roe v. Wade is overturned. Other states are taking steps to protect abortion rights through legislation.

Experts warn the Texas power grid faces new strains from growing tech-sector data centers that are consuming ever more electricity for crypto-mining and artificial intelligence.

U.S. schools can make use of special visas to hire teachers from other countries. In some rural school districts in Alaska, foreign teachers make up over half the staff.

Arizona Democratic Sen. Kyrsten Sinema is leaving her party to register as an independent. The decision shakes up the power dynamic in the closely divided U.S. Senate.

Air quality in Southern California is dangerously bad because of the fires. Our reporter set out to build an air filter -- in a style the EPA praised, using only things she already had at home.

The Trump administration has pledged to invest in artificial intelligence. Yet a promising program that uses AI to solve weather-related problems lost funding from the National Science Foundation.

The Trump administration has pledged to invest in artificial intelligence. Yet a promising program that uses AI to solve weather-related problems lost funding from the National Science Foundation.

It's the anniversary of the Inflation Reduction Act. Voters in Nevada — a key swing state — say inflation is still very much their top issue.