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Carbon Removal

Carbon removal.
Podcast

Anthropic and the Future of the Buzzy Carbon Removal Buyer’s Club

Rob talks with Hannah Bebbington Valori, head of Frontier Climate, about the group’s new $915 million fund.

Sustainability

Are We Too Obsessed With Carbon Accounting?

A new Searchlight Institute report joins a growing chorus arguing that corporate climate targets do more harm than good.

Green
Carbon Removal

Tensions Mount at Greenhouse Gas Protocol as Scientist Resigns in Protest

The move by University of Pennsylvania researcher Danny Cullenward intensifies a debate over integrity at the carbon accounting organization.

Yellow
Carbon capture.

The Sorry State of Carbon Removal

A new scientific report on the state of the industry shows a growing gap between what we can do and what we need to do.

Carbon removal and AI.

The AI Boom Needs Carbon Removal

The CEO of Climeworks argues that the buildout of technology to suck greenhouse gas from the air should be considered part of the cost of artificial intelligence.

Green
AM Briefing

Blowing the Whistle

On Trump’s renewables embargo, Project Vault, and perovskite solar

Pollution.
<p>Heatmap Illustration/Getty Images</p>

Current conditions: Illinois far outpaces every other state for tornadoes so far this year, clocking 80, with Mississippi in a distant second with 43 • Western North Carolina’s Blue Ridge Mountains face high wildfire risk during the day and frost at night • A magnitude 7.4 earthquake off the coast of Honshu, Japan, has raised the risk of a tsunami.

THE TOP FIVE

1. Whistleblowers allege big problems with corporate carbon standards-setter

The nonprofit that sets the standards against which tens of thousands of companies worldwide measure their greenhouse gas emissions is secretive and ideologically tilted toward industry. That’s the conclusion of a new whistleblower report on which Heatmap’s Emily Pontecorvo got her hands yesterday. The problems at the Greenhouse Gas Protocol “are systemic,” and the nonprofit “seems to be moving further away from its commitment to accountability,” the report said. Danny Cullenward, the economist and lawyer focused on scientific integrity in climate science at the University of Pennsylvania’s Kleinman Center for Energy Policy who authored the report, sits on the Protocol’s Independent Standards Board. Due to a restrictive non-disclosure agreement preventing him from talking about what he has witnessed, he instead relied on publicly available information to illustrate the report. “Not only does the nonprofit community not have a voice on the board,” Cullenward wrote, but the absence of those voices “risks politicizing the work of scientist Board members.” Emily added: “While the Protocol’s official decision-making hierarchy deems scientific integrity as its top priority, in practice, scientists are left to defend the science to the business community.” The report follows a years-long process meant to bolster the group’s scientific credibility. “Critics have long faulted the Protocol for allowing companies to look far better on paper than they do to the atmosphere,” Emily explains. But creating standards that are both scientifically robust and feasible to implement is no easy feat.

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Carbon Removal

Leading Climate Standards Group Fraught With Secrecy and Bias, Whistleblowers Say

A new report shared exclusively with Heatmap documents failures of transparency and governance at the Greenhouse Gas Protocol.

Pollution and trees.
<p>Heatmap Illustration/Getty Images</p>

It is something of a miracle that tens of thousands of companies around the world voluntarily report their greenhouse gas emissions each year. In 2025, more than 22,100 businesses, together worth more than half the global stock market, disclosed this data. Unfortunately, it’s an open secret that many of their calculations are far off the mark.

This is not exactly their fault. To aid in the tedious process of tallying up carbon and to encourage a basic level of uniformity in how it’s done, companies rely on standards created by a nonprofit called the Greenhouse Gas Protocol. The group’s central challenge is ensuring that its standards are both credible and feasible — two qualities often in tension in greenhouse gas accounting. The method that produces the most accurate emissions inventory may not always be feasible, while the method that’s easy to implement may produce wildly inaccurate results.

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