A climate scientist’s legal win just got flipped on its head

Michael Mann, the climate scientist famous for his “hockey stick” graph, won a $1 million defamation case — but a judge has now slashed the award, sanctioned his lawyers, and ordered him to pay over $500,000 in legal fees.

Dino Grandoni reports for The Washington Post.


In short:

  • Mann initially won a defamation case against two conservative commentators who falsely accused him of academic fraud, comparing his climate research to child molestation.
  • A judge has now ruled that Mann’s lawyers misrepresented financial damages, reducing his award and ordering him to pay legal costs for National Review, one of the publishers of the defamatory content.
  • Mann’s legal team plans to appeal, arguing the original defamation ruling remains valid and that the court made significant legal and factual errors.

Key quote:

[Mann] “believes that the court committed errors of fact and law and will pursue these matters further.”

— Peter J. Fontaine, one of Michael Mann’s attorneys

Why this matters:

Mann’s case is a stunning reversal in a proceeding that was supposed to be a victory for scientists fighting back against disinformation. While the original ruling confirmed he was defamed, the reversal raises concerns about how courts handle cases involving scientists facing politically motivated attacks and could have a chilling effect on researchers speaking out against disinformation.

Read more:

Climate scientist Michael Mann takes his critics to court

A man using a snow blower on a snowy day

‘Exceptionally cold’: How a warming Arctic is pushing the US and Eastern Europe into a deep freeze

Warm Arctic waters and cold continental land are combining to stretch the dreaded polar vortex in a way that sent much of the United States a devastating dose of winter weather.

Two men in suits tallying numbers on a calculator

After decades of deflection, ExxonMobil moves to reshape global climate accounting

For decades, ExxonMobil argued consumers, not oil giants, should take responsibility for fossil fuel pollution. It’s now backing an accounting scheme that moves pollution “liabilities” to buyers’ books.

Democratic Senator Sheldon Whitehouse makes a speech at a political rally for Barack Obama on September 20, 2008

Democrats are shying away from climate messaging. One of their own is fighting back.

There’s a schism within the Democratic Party about whether talking about climate change is the right message to win back control of Washington.

Land-based wind turbines on flat green landscape

What’s killing onshore wind power?

Facing staunch local opposition and federal roadblocks, new wind project development is teetering on the brink, despite growing power demand. Even Iowa, the nation’s most wind-powered state, is “closed for business,” experts say.

off shore wind farm against setting sun

UK among 10 countries to build 100GW wind power grid in North Sea

Energy secretary Ed Miliband says clean energy project is part of efforts to leave ‘the fossil fuel rollercoaster.’

Biogas or bio gas division for energy consumption and sources outline diagram.

USDA pauses manure-to-gas loans amid high delinquency, project failures

The US Department of Agriculture (USDA) is pausing a loan program aimed at promoting anaerobic digesters — many of which are issued for large-scale farms that turn animal waste into gas — to investigate high loan delinquency rates and underperformance.

A logging truck on a dirt road next to a forest

Europe gets ‘green energy.’ These Southern towns get dirty air

Wood pellets burned for electricity in Europe are fueling air pollution and health concerns in predominantly low-income towns in Mississippi and Louisiana.

From our Newsroom
Multiple Houston-area oil and gas facilities that have violated pollution laws are seeking permit renewals

Multiple Houston-area oil and gas facilities that have violated pollution laws are seeking permit renewals

One facility has emitted cancer-causing chemicals into waterways at levels up to 520% higher than legal limits.

Regulators are underestimating health impacts from air pollution: Study

Regulators are underestimating health impacts from air pollution: Study

"The reality is, we are not exposed to one chemical at a time.”

Pennsylvania governor Josh Shapiro speaks with the state flag and American flag behind him.

Two years into his term, has Gov. Shapiro kept his promises to regulate Pennsylvania’s fracking industry?

A new report assesses the administration’s progress and makes new recommendations

silhouette of people holding hands by a lake at sunset

An open letter from EPA staff to the American public

“We cannot stand by and allow this to happen. We need to hold this administration accountable.”

wildfire retardants being sprayed by plane

New evidence links heavy metal pollution with wildfire retardants

“The chemical black box” that blankets wildfire-impacted areas is increasingly under scrutiny.

Stay informed: sign up for The Daily Climate newsletter
Top news on climate impacts, solutions, politics, drivers. Delivered to your inbox week days.