Two condors soar over the Colorado River near the Navajo Bridge in Marble ... than a walk-in campground) are offline between October 15 and May 15. Privately operated Trans-Canyon Shuttle ...

The Colorado River in the Grand Canyon is the nation’s most threatened ... Such floods pile up sand to form camping beaches and sandbars, and to cover and protect archaeological sites near ...

And yet, the Grand Canyon remains yoked to the present in one key respect. The Colorado River, whose wild energy incised the canyon over millions of years, is in crisis. As the planet warms ...