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  • Jason Mark

    Jason Mark was the editor in chief of Sierra from 2015 to 2024. He is the author of Satellites in the High Country: Searching for the Wild in the Age of Man, and he's currently working on a new book about shifting baseline syndrome. Find him on Bluesky.
     

    I’m an American Climate Emigrant

    My family moved northward for many reasons—climate chaos was among them
    By Jason Mark October 12, 2020
    In this story: climate change
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    Climate Change Became a Debate Question Because You Asked for It

    The candidates couldn’t avoid talking about the biggest issue on Earth
    By Jason Mark September 30, 2020
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    Beyond Peak Oil

    Is the oil industry on its last legs?
    By Jason Mark August 27, 2020
    In this story: oil
    Beyond Peak Oil

    You’re No Public Lands Hero If You Can’t Pronounce Yosemite

    Trump’s botched Great American Outdoors Act signing proved he’s a phony
    By Jason Mark August 6, 2020
    In this story: politics, national parks
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    There’s No Time to Waste in Bringing the Carbon Barons to Justice

    Climate liability cases are gaining ground just as Big Oil is going broke
    By Jason Mark July 29, 2020
    In this story: climate change, environmental law
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    In Public Lands Is the Preservation of the Republic

    Can America's parks and preserves bring together a divided country?
    By Jason Mark June 24, 2020
    In this story: national parks, hiking, public lands
    Close-up of a ledge in the Grand Canyon. People are looking over the edge and taking photos.

    Let's Keep Some Digital Blank Spaces on the Map

    In an age of digital enclosure, the wilderness should remain free from connectivity
    By Jason Mark June 24, 2020
    In this story: public lands
    A young man stands in Lake Temescal, Oakland, at dusk holding an iPad. There's a soft glow on his face.

    Birding While Black

    A conversation with birder Jason Ward, educator and host of “Birds of North America”
    By Jason Mark June 5, 2020
    In this story: environmental justice
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    All Environmentalism Is Political

    A healthy environment depends on a healthy democracy
    By Jason Mark April 25, 2020
    2020 May/June Sierra Magazine

    The Rebirth of the Food Sovereignty Movement

    The pandemic is reviving the push for locally produced foods
    By Jason Mark April 15, 2020
    In this story: food and drink, coronavirus
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