WHAT'S HAPPENING

  • Send a message to your senators urging them to stand for people and the planet by strongly opposing Tillerson's nomination for Secretary of State!
  • Three new monuments celebrate civil rights history; two existing land and water monuments expanded.
  • Stand with us by doing what YOU like best—hiking, baking, dancing, or using upcoming celebrations like the holidays to ask for donations.
  • Trump won’t be able to override the ban, which has the force of law.
  • The Dakota Access Pipeline poses a serious threat to Indigenous rights, biodiversity, water, and the environment.
  • Looking for a getaway? We've got 300+ ideas for you.
  • GO LOCAL

    See what we are doing in:
     
     
     
     

    ACT NOW

    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

    Thanks to the generosity of our partners, volunteers, and supporters, Military Outdoors has lined up an incredible summer and fall with six...

    NOW IN SIERRA MAGAZINE

    Violence against the Rarámuri indigenous people is widespread and goes largely unnoticed
    Urban Forests: A Natural History of Trees and People in the American Cityscape
    A lyrical history of U.S. urban forests

    FROM OUR BLOGS

    “I was desperate to know nature all along. I just needed to find a way to access it.”
    Michael Brune
    Donald Trump's ability to wield power will depend on us and, as President Obama put it, how we choose to participate. 

    FEATURED OUTINGS

    Landscape
    Check out our full 2017 trip roster spanning the States and across the globe.
    Service Trip volunteer participants group shot
    Give back on a fun and rewarding volunteer vacation, with free time for hiking or taking it easy.
    Connect with the Sierra Club