A truck with rows of pipeline tied to the flatbed.

Court throws out conviction of Line 3 protester after finding misconduct in Minnesota trial

An appeals court in Minnesota overturned the felony conviction of a woman who protested the Line 3 pipeline, citing widespread prosecutorial misconduct during her trial.

Nina Lakhani reports for The Guardian.


In short:

  • Mylene Vialard, a climate activist convicted in 2023 of felony obstruction, will receive a new trial after a Minnesota court found that prosecutors failed to ensure she had a fair trial.
  • Vialard was arrested in 2021 after attaching herself to a bamboo tower to block a pumping station on Enbridge’s Line 3 pipeline, which runs through Indigenous territory and has faced major opposition due to environmental risks.
  • The appeals court said the misconduct was “pervasive,” including false claims by prosecutors and violations of court orders, and that the trial judge’s instructions didn’t offset the prejudicial effects.

Key quote:

“It is everyone’s role to resist bullies and protect the only world we have that can feed and provide for all of us humans and non-humans.”

— Mylene Vialard, environmental activist

Why this matters:

The Line 3 pipeline has long been a flashpoint in debates over fossil fuel expansion, Indigenous rights, and environmental protection. It cuts through fragile ecosystems and treaty-protected lands, raising concerns about oil spills and long-term damage to water systems, including rivers that feed into the Mississippi. Protesters say the state’s crackdown on civil disobedience — backed in part by payments from the pipeline company to police, The Guardian reports — represents a dangerous entanglement of corporate interests and law enforcement. This case throws a spotlight on how protestors, many of them Indigenous or allied with tribal groups, face legal threats even when engaging in peaceful resistance.

Related: Lawmakers push to penalize pipeline protests

Judge's hammer gavel and rolled banknotes with USA flag in the background.
Phot credit: Copyright: weyo / BigStock Photo ID: 165149045

Ohio utility corruption defendants to SCOTUS: Bribes are free speech

If the court rules in favor of a former lawmaker and a lobbyist convicted in Ohio’s HB 6 scandal, it would have huge implications for the utility sector.

A view of a gas-fired power station at dusk
Credit: Aunging/Big Stock Photo

Virginia gas plant moves ahead despite community objections

Tense public hearings and protests mocking Dominion Energy have followed the proposed natural gas plant in Chesterfield County, VA, throughout its approval process, which is almost complete.
Boat on the ocean highlighted against an orange, burning sun
Photo Credit: Photo by Samuel Arkwright on Unsplash

‘Profound impacts’: record ocean heat is intensifying climate disasters, data shows

Oceans absorb 90% of global heating, making them a stark indicator of the relentless march of the climate crisis.

participants at the entrance to COP 30 pavilion
Credit: https://www.flickr.com/photos/isostandards/ Creative Commons: https://creativecommons.org/licenses/by-nc-sa/4.0/

The impact of US withdrawal from global climate pacts

The US has pledged to pull out of dozens of international organizations and treaties established to advance the protection of the planet. But it doesn't spell the end of environmental action.
Coastal village in Greenland with multicolored homes and ice floes in the background

As Trump eyes Greenland, what could that mean for island’s mineral wealth and environment?

The Danish territory holds significant stores of oil, gas and minerals. But regulations and the extreme environment have kept the vast majority in the ground.
a large fire burning in a field next to a forest

Opinion: Climate misinformation threatens Canada’s national security

With Canada's wildfire season only months away, the time to combat climate misinformation is now, before the next crisis exposes the weaknesses in our systems.

A refinery with lots of smokestacks and industrial equipment

US oil companies will be slow to answer Trump’s call to tap into Venezuela, experts say

President Donald Trump is unlikely to see many U.S. oil companies jump in response to his call to tap into Venezuela, industry experts say.
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.