The Navajo Nation said no to a hydropower project. Trump officials want to ensure tribes can’t do that again.

Early last year, the hydropower company Nature and People First set its sights on Black Mesa, a mountainous region on the Navajo Nation in northern Arizona. The mesa’s steep drop offered ideal terrain for gravity-based energy storage, and the company was interested in building pumped-storage projects that leveraged the elevation...

When Elephants Trample Your Farm, Who Do You Call?

When Krithi Karanth walks into a forest village in the shadow of India’s Bandipur National Park, she is often greeted by farmers with cell phones in hand — ready to report video of a night-time encounter with an elephant herd, or the fresh tracks of a leopard that passed behind...