The Powell Museum celebrates the life and achievements of Major John Wesley Powell, the man credited with leading the first group of white men through the Grand Canyon in 1869. In addition to ...

The Grand Canyon is really two distinct national parks, whatever the lines on the map say. The better-known South Rim receives most of the park’s nearly 5 million annual visitors; it’s bustling with ...

Uranium and arsenic levels in the sump at Pinyon Plain Mine are more than 3,000 times higher than safe drinking water levels, company data shows. A common yet dangerous occurrence in the hardrock ...