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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.
 

Supreme Court Delivers a Victory to Big Oil

Narrow ruling allows the carbon barons to keep running down the clock
By Jason Mark May 20, 2021
In this story: Supreme Court, climate change, oil
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Forward Ever, Backward Never

When it comes to the Sierra Club's core mission, the future takes precedence
By Jason Mark March 2, 2021
In this story: John Muir
Close-up black-and-white photo of John Muir./ Young people are lined up and holding a bright-orange banner.

On the Sensibilities of an Ecologist

"Beloved Beasts" tracks the history of the conservation movement
By Jason Mark March 7, 2021
In this story: books, animals
The cover of Beloved Beasts shows multiple animals.

Supreme Court Hears Arguments in Landmark Climate Change Case

Oil companies stick to procedural delay as the planet runs out of time
By Jason Mark January 20, 2021
In this story: Supreme Court, climate change, oil
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The Most Important Environmental Stories of 2020

It may have been an awful, no-good year—but there were some silver linings
By Jason Mark December 23, 2020
In this story: climate change
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Writing the Future

The possibilities for what comes next are endless
By Jason Mark December 22, 2020
In this story: coronavirus, climate change
Illustration shows a rowboat full of people of different races, with an eagle flying overhead.

Ishi Wilderness Is a Portal Into the Indigenous History of California

A land acknowledgment becomes a gesture of gratitude to those who came first
By Jason Mark December 27, 2020
In this story: hiking
A river flows through the Ishi Wilderness in California. The sky is multicolored, and the river is lined with rocks and trees.

The Climate Voters Are Coming

Arizona provides a glimpse of the climate action majority
By Jason Mark November 9, 2020
In this story: voting rights, politics
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A Bird's-Eye View of the More-Than-Human World

Helen Macdonald reflects on breaking free in "Vesper Flights"
By Jason Mark November 8, 2020
In this story: books, birds
Vesper Flights cover

Hitched to Nature

The pandemic has illustrated how connected humans are to wildlife
By Jason Mark October 28, 2020
In this story: coronavirus
A group of people hand-feed macaques on a street in Thailand.
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