A Flagstaff-based hub for regional science -- and for the protection of the Grand Canyon and the Colorado River -- could be under threat from President Donald Trump’s proposed cuts to the federal ...

Grand Canyon river runners enjoyed the best camping beaches in years this season, and a riverside vegetation restoration project got a boost, both the result of the first planned springtime flood on ...

Earth researchers have spent generations decoding the Grand Canyon, turning its cliffs and chasms into one of the clearest records of our planet’s deep past. These nine Grand Canyon facts, grounded in ...