Martha Anne Overholser, 66, was last seen at Mather Point on the South Rim of Grand Canyon National Park on Dec. 10, 2024. Park officials say the Michigan resident failed to return to her commercial bus tour.

Arizona Sen. Kyrsten Sinema delivered a farewell speech on the senate floor on Wednesday as she prepares to step down from her seat after a single term.

Leadership in the U.S. House did not include compensation for victims of radiation exposure in its current budget proposal. The program expired in June and advocates were hoping Congress would renew it before the end of the year.

The Relict Leopard Frog was once found in wetlands throughout northwest Arizona, southeast Nevada and southwest Utah. It was thought extinct until isolated populations were found in Nevada in 1991.

Water conservation measures are currently in place at the South Rim of Grand Canyon National Park due to breaks in the Transcanyon Pipeline. Replacing the pipeline requires a more than $200 million investment in infrastructure without disrupting archaeology and ecology.

The Apache County Board of Supervisors has voted to appoint Navajo Nation First Lady Jasmine Blackwater-Nygren as county attorney, making her the first Indigenous woman to serve in the role.

It’s International Dark Sky Week, a worldwide celebration that was started in 2003 to raise awareness about light pollution. This year is the first time it’s come to Flagstaff.

Frustrated with their party's response to President Trump, a wave of young Democrats are challenging incumbents in safe blue districts, hoping to mirror Alexandria Ocasio-Cortez's upset win in 2018.

Weinstein is facing sex crimes charges after his 2020 New York conviction was overturned last year. The #MeToo movement was catalyzed in part by the many women who came forward to accuse the disgraced producer of misconduct.

The word itself predates Christianity, but the conclave with its secretive deliberations and ancient trappings still captures the public's curiosity.

With the U.S. now reporting more than 800 measles cases, a new poll from health policy research group KFF finds that many people are being exposed to false claims about measles and the measles vaccine.