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.

NPR's Ayesha Rascoe speaks to Jimmy Story, a former U.S. ambassador to Venezuela, about the American military buildup in the region and pressure on Venezuelan President Nicolas Maduro.

Residents of the growing town of Eagle, Idaho, are encountering a nuisance usually associated with big cities: swarms of rats. In Eagle that includes the acrobatic roof rat.

Forty-four death row inmates across the U.S. have been executed this year, reaching a level not seen in more than a decade.

The pigeon population has exploded — a result of people feeding the birds. For some it's a holy duty and a way to connect to nature. Critics point to health risks tied to exposure to pigeon droppings.

NPR's Ayesha Rascoe speaks with Wall Street Journal reporter Katie Bindley about Waymo self-driving vehicles and recent changes to how assertively they navigate traffic.