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

    July 25, 2014 to July 27, 2014
    MR: Mt. Russell (14,088), Mt. Tunnabora (13,563), Mt. Carillon (13,573):...
    July 25, 2014 to July 27, 2014
    Especially planned for WTC students who enjoyed climbing the rock at J-Tree and...

    Act Now

    Support strong climate action
    The EPA is ready to crack down on runaway climate pollution. Show your support for strong climate action!
    Join 50793 others and Take Action

    Be a member of the country's largest, most effective grassroots movement.

    We are the nation's largest and most influential grassroots environmental organization.

    MOST POPULAR CONTENT

    Ending Energy Poverty
     400 million people in India lack access to electricity. In Uttar Pradesh, India's most populous state, solar is helping rural people get...

    NOW IN SIERRA MAGAZINE

    global warming denialism by country
    English-speaking countries are the most likely to doubt human-caused climate change.
    Hetch Hetchy, by Albert Bierstadt
    The median rent for an apartment in San Francisco is $3,285. It costs the city less than that to rent the Yosemite valley that broke John...

    FROM OUR BLOGS

    Photo credit: SolarAid What difference can a value added tax make to the lives of those living in energy poverty?  A big one.
    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