Officials at Grand Canyon National Park have suspended all overnight hotel stays because of a major break in the pipeline that brings drinking water to the South Rim.

Sen. Mark Kelly says he won’t back down in the face of a Pentagon investigation after he and other Democratic lawmakers called on U.S. troops to refuse illegal orders.

Republican state Sen. John Kavanagh plans to introduce a bill that would remove legal penalties for county supervisors who fail to canvass elections.

A landscape’s dramatic features can overwhelm first-time visitors. But sometimes the places that exist on a more human scale can have a greater impact. In his latest Canyon Commentary, author Scott Thybony tells how this happened to novelist Willa Cather in Walnut Canyon.

The National Park Service says it is going to start charging international tourists an extra $100 to enter some of the most popular U.S. parks.

A historic Chino Valley farm that supported Fred Harvey’s railroad dining empire over a century ago is on track to become part of a new state park.

Astronomers have long been concerned about reflections from satellites showing up in images taken by telescopes and other scientific instruments.

Congress is weighing an extension of the Affordable Care Act subsidies while millions of Americans are unsure what their insurance will cost next year.

Craig Garthwaite, Director of the Program on Healthcare at Northwestern University and co-author of a new paper from the Aspen Economic Strategy Group, talks about reforms that could make healthcare cheaper and more efficient.

Lionel Messi leads Inter Miami to its first MLS Cup, sparking new questions about the league's future. Paul Tenorio of The Athletic was at the final and shared his views.

What happens when a director tries to follow up an Oscar win, with NPR's Marc Rivers and film critic Kyle Wilson.