Mark Hertsgaard

@markhertsgaard

Mark Hertsgaard is the environment correspondent of The Nation and the executive director of the global media collaboration Covering Climate Now. His new book is Big Red’s Mercy:  The Shooting of Deborah Cotton and A Story of Race in America.

An Indigenous man performs, lying on the ground while holding a globe in his hand during the Indigenous People Global March at the COP30 UN Climate Change Conference in Belém, Brazil, on November 17, 2025.

A New Economic Superpower Could Spark a Retreat From Fossil Fuels A New Economic Superpower Could Spark a Retreat From Fossil Fuels

A little-noticed ray of hope may be peeking over the horizon. A climate conference in Colombia later this month could begin to draw up the roadmap blocked at COP30.

Apr 7, 2026 / Mark Hertsgaard and Kyle Pope

A Google data center in Henderson, Nevada, on July 24, 2025.

The AI Boom Is a Climate Bust The AI Boom Is a Climate Bust

It’s not just the massive amounts of water and energy data centers require—AI is also spreading climate misinformation across the Internet.

Apr 3, 2026 / Mark Hertsgaard

Are Plastics Poisoning Us?

Are Plastics Poisoning Us? Are Plastics Poisoning Us?

A Netflix documentary exposes plastic’s health harms but misses its climate connection.

Mar 26, 2026 / Mark Hertsgaard

A BP company logo sits on display on the forecourt of a gas station.

The Silencing Power of Big Oil’s Climate Lies The Silencing Power of Big Oil’s Climate Lies

A new report suggests that the majority of people think new economic rules are required to curb climate change. The issue is that those majorities think they are a minority.

Mar 19, 2026 / Mark Hertsgaard

Men watch from a hillside as a plume of smoke rises after an explosion on March 2, 2026, in Tehran, Iran.

The Iran War Is Also a Climate War The Iran War Is Also a Climate War

Climate change is not a peripheral part of what we’re seeing in Iran—it’s structurally embedded in modern warfare.

Mar 5, 2026 / Mark Hertsgaard and Giles Trendle

Donald Trump looks over Japanese Prime Minister Sanae Takaichi as she speaks to US Navy personnel aboard the USS George Washington aircraft carrier at Yokosuka naval base on October 28, 2025.

Japan’s New Climate Bomb—in the US Japan’s New Climate Bomb—in the US

Bloomberg Green reveals the climate costs of the US-Japan trade deal.

Feb 26, 2026 / Mark Hertsgaard

Winter Olympic Committee Press Conference

The International Olympics Committee Is Urged to Drop Oil Company Sponsors The International Olympics Committee Is Urged to Drop Oil Company Sponsors

Global warming means the future of Winter Games “is literally melting away.”

Feb 5, 2026 / Mark Hertsgaard

Minnesotans film a federal law enforcement agent during a patrol in Minneapolis, Minnesota, on January 11, 2026.

Citizen Journalists Are Minneapolis’s Unsung Heroes Citizen Journalists Are Minneapolis’s Unsung Heroes

Without their videos of ICE shootings, we wouldn’t know what is really happening.

Jan 29, 2026 / Mark Hertsgaard

Climate Stories Are Everywhere

Climate Stories Are Everywhere Climate Stories Are Everywhere

Why do many news outlets ignore the connections between climate change and the struggle for democracy?

Jan 22, 2026 / Mark Hertsgaard

Homes burn as powerful winds drive the Eaton Fire on January 7, 2025, in Pasadena, California.

Climate Hushers Need to Get Real Climate Hushers Need to Get Real

Political realism doesn’t outweigh scientific realism.

Jan 15, 2026 / Mark Hertsgaard

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