Topic: Colorado River

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  • A hiking trail down time's spiral

    For a geologist, the 8-mile hiking trail to the Grand Canyon's floor is an irresistible lesson in Earth's history.

  • Gallery America's top 10 landmarks

    10 - The Gateway Arch: Located in St. Louis, Mo., The Gateway Arch, or the Gateway to the West, is 630 ft. tall and 630 ft. wide. It was completed in 1965. Visitors can take a tram to to top for a spectacular view of the Mississippi river and southern Illinois.

  • Redefining longevity: the new centenarian spirit

    Redefining longevity: the new centenarian spirit

    The US centenarian population is doubling every decade – and they're redefining aging and longevity.

  • Imperial

    For the brave reader ready to tackle it, this sprawling text offers a fascinating glimpse of a corner of America at work.

  • In Pictures Seven Wonders of Nature finalists

    The Amazon Rainforest is one of 28 sites picked as finalists in a global poll to name the New Seven Wonders of Nature, conducted by the Swiss nonprofit New7Wonders Foundation. The Brazilian Amazon, pictured here, harbors 40 percent of all remaining tropical rainforest, playing a vital role in global biodiversity and in protecting the earth's climate.

  • In Pictures America's National Parks

    Summer is here and many people from around the world will be visiting America's national parks. The National Park Service expects over 270,000,000 guests at parks every year. Yellowstone National Park is one of the most popular – every year at least 2 million tourists enjoy the park's wildlife and unique geothermal features. Yellowstone was the first American national park and is renowned for its bears, wolves, bison, geysers, and hot springs.

  • Water-use saga: The return of Glen Canyon

    Water-use saga: The return of Glen Canyon

    After a beautiful landscape reemerged, a new plan for Lake Powell water usage has taken shape.

  • American voices: Resilience runs deep in a somber time

    American voices: Resilience runs deep in a somber time

    On a journey from Plymouth Rock to the Grand Canyon, we find an America that is neither as divided as talk-show histrionics would suggest, nor as sullen as a flagging economy says we should be. We find a country that is struggling, yes, but is also pragmatic and still harbors a little idealism.

  • Too many 'straws' sucking water out of the Colorado River

    Discoveries Too many 'straws' sucking water out of the Colorado River

  • Herbert Hoover: The 31st President, 1929-1933

    Despised at home, Hoover was a savior to many Europeans