WHAT'S HAPPENING

  • The biggest climate march in history. Learn more and sign up now!
  • The fossil fuel industry is trying to snuff out Texas's wind energy boom. It didn't reckon with Greg Wortham.
  • When you go backpacking, pick a route where you're allowed to bring your best bud.
  • "My children and I will breathe easier knowing that cleaner air is coming," said Vernon Muhammad, a father and resident of North Omaha.
  • A journey through the winding rivers in one of our nation’s greatest wilderness icons.
  • Go Local

    August 1, 2014 to August 5, 2014
    Pack thirty miles of spectacular scenery and five days of adventure into an...
    August 1, 2014 to August 3, 2014
    Backpack along the Montana/Idaho border above Cache Creek and Crooked Fork in...

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    NOW IN SIERRA MAGAZINE

    Hey Mr. Green -- Find out the answer
    Is there a link between wind farms and nearby ground warming and drying? Mr. Green finds out!
    Jen and Grant Clean Bin Project
    When these zero waste families eliminated their household trash, they stumbled on some unexpected benefits. The less they waste, the more...

    FROM OUR BLOGS

    When it comes to energy access, we’re fond of saying small is big.
    Last year, about 900,000 people marveled at the majestic old-growth redwoods of Muir Woods. But if President Theodore Roosevelt had not...

    Featured Outings

    September 14, 2014 to September 25, 2014
    Savor "the good life" while touring Tuscany's fabled towns and countryside. We'll explore Florence, Siena, Pisa, San Gimignano, Volterra,...
    September 28, 2014 to October 4, 2014
    Hike through history on the scenic trails of the picturesque Catskills as trees begin to turn brilliant shades of gold and red. Hike to New...
    Connect with the Sierra Club