The company, xAI, has installed several dozen turbines in Memphis without proper permits, the group said, polluting a nearby community.

© Karen Pulfer Focht, via Reuters

Four experts were sued for defamation ahead of a seminar where they planned to talk about research into the potential health risks on playgrounds and sports fields nationwide.

© Bridget Bennett/Bloomberg

The Trump administration’s move sets back a decades-long effort to end the use of the material, which is widely banned in other countries.

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Environmental groups had opposed expanding a Montana mine previously caught up in allegations of cocaine trafficking and the faked kidnapping of an executive.

© Louise Johns for The New York Times