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Cases / Law, regulation and treaties · United States · 2010–2026

Virginia court rejected demand for Michael Mann's emails; defamation award later cut

Short record: the main facts, with sources. A full case file has not been prepared.

Nature's voice · report
No measurement of the harm done to me here is on record.
Did nature suffer? Not measured.
Not on record
  • The record does not name which of my species, waters, soils or forests were harmed.
What the record lacks: 3 none on record · 1 not measured See the gaps

A 2012 Virginia ruling rejected the attorney general's demand for climate scientist Michael Mann's university emails. The sources reviewed do not describe any effect on the environment.

What?
Michael Mann won a 2024 defamation verdict against two authors and two organisations, with punitive damages later reduced to USD 5,000. Reason (Volokh)
Where?
Virginia, for the 2010 email demand and the 2012 ruling. Phys.org
When?
Demand in 2010; Virginia ruling in March 2012; jury verdict in 2024; sanctions in January 2026. Reason (Volokh)
Who?
Gained
  • Defendants dismissed from the suit — Awarded about USD 1 million in attorney fees under an anti-SLAPP law Reason (Volokh)
Lost
  • Michael Mann — Ordered to pay about USD 1 million in attorney fees to dismissed defendants; his legal representatives were later sanctioned for bad faith in January 2026 Reason (Volokh)
Harmed
None on record
Why?
Not stated in the sources reviewed.
How?
Michael Mann sued two authors and two organisations for defamation in Washington, D.C. in 2012; the state demand for emails was made under the fraud law. Reason (Volokh)
6 of 6 questions answered from the record

What happened

The record, in order.

Phys.org reported in March 2012 that the Virginia Supreme Court rejected Attorney General Ken Cuccinelli's 2010 demand for Michael Mann's University of Virginia emails under the state's fraud law.

Reason reported in January 2026 that a court sanctioned Mann's legal representatives for bad faith after they presented a lost grant to a jury as USD 9,713,924 instead of USD 112,000.

Reason also reported that a 2024 jury awarded USD 1 from each of two authors and USD 1 million in punitive damages from Steyn, which the court reduced to USD 5,000.

    In court and with insurers

    Every proceeding and every insurer decision on record.

    Lawsuits and rulings

    1. 2012–2024Claimant won
      Mann v. Steyn
      Washington, D.C. court (defamation) · Civil · Michael Mann → Steyn; Simberg; National Review; and a second organisation

      A jury awarded USD 1 from each of two authors and USD 1 million in punitive damages from Steyn; the court reduced the punitive award to USD 5,000. An anti-SLAPP ruling ordered Mann to pay about USD 1 million in fees to dismissed defendants. In January 2026 the court sanctioned Mann's legal representatives for bad faith over a grant figure. Reason (Volokh)

    2. 2010–2012-03Defendant won
      Virginia attorney general's demand for Michael Mann's emails
      Supreme Court of Virginia · Civil · Virginia Attorney General Ken Cuccinelli → University of Virginia (holder of the emails)

      The court rejected the attorney general's demand for the emails under the state's fraud law, in March 2012. Phys.org

    Insurers

    No insurer decision on record.

    What we don't know

    Undisclosed, unproven, untried: recorded as data.

    Nature

    • Not measured Harm to nature: The record holds no measurement of harm to nature.

    Record

    • None on record The status of Mann's appeals against Steyn and Simberg is not established in the sources reviewed.
    • None on record The sources reviewed do not describe the articles that were the basis of the defamation suit.
    • None on record The sources reviewed do not connect the case to any effect on the environment.

    Did the harm stop?

    Not stated in the sources reviewed.

    Who paid?

    Not stated in the sources reviewed.

    Sources

    Voices on record: — Company or project— Government and regulators— Courts✓ Press and investigations— Communities and civil society— Researchers

    Press and investigations

    Terms used on this page

    Law and courts

    Punitive damages
    Money a court orders a defendant to pay to punish especially reckless conduct, on top of compensation for losses. Mainly used in US courts.
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