• The biggest climate march in history. Learn more and sign up now!
  • In India, 400 million people still lack access to electricity. Read how hyper-local solar-energy systems are lighting up the country's darkest outposts.
  • See that bushy-tailed rodent chattering in the tree outside your house? It could be preparing to take down the electric grid.
  • New animals in stock! Adopt a wild animal and help support the Sierra Club.
  • This week, tens of thousands of people will check out the hottest new EVs (and old favorites) at more than 140 events in 35 states. Find an event near you.

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    Speak out for a strong Clean Power Plan
    The EPA's Clean Power Plan is a big step in the fight against runaway climate pollution. Raise your voice to make it even stronger!
    Join 46750 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.


    Take a look our videos and see why we need you at the People's Climate March. Watch and share with your friends. And don't forget to RSVP...


    Valley Uprising features bold newcomer, Alex Honnold, as he free solos the big walls of Yosemite.
    Just in time for Yosemite’s 150th birthday, Valley Uprising portrays the respective histories of rock climbing and Yosemite as inextricably...
    Welcome to the neighborhood
    "Dear Mr. Muir: Your home address is incorrectly configured. Please adjust your settings."


    This week on Sierra Club Radio: Jeanine Cotter, CEO of solar installation company Luminalt Rachel Butler, National Organizer for the Sierra...
    I've long known how wasteful, destructive, and dangerous the process of extracting oil from tar sands is. To get one barrel of oil, you...

    Featured Outings

    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...
    October 12, 2014 to October 18, 2014
    Kayak the Grand Strand during a unique time of year when the summer crowds are gone, oyster roasts are on the menu, and air and water...
    Connect with the Sierra Club