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Wildfires are increasing toxic mercury in streams in Idaho, Oregon, Washington, study finds

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Wildfires are increasing toxic mercury in streams in Idaho, Oregon, Washington, study finds


Credit: Pixabay/CC0 Public Domain

Wildfires have been burning across Idaho this summer, and their list of harmful impacts is long, from worsening health conditions because of smoke to challenges recovering millions in costs to fight them.

But a recent U.S. Geological Survey has added another bad side effect to the list: the rise of a toxic chemical.

The study, which took place between 2021 and 2022, sampled 57 streams at the beginning of river systems in Idaho, Oregon and Washington for mercury, a chemical that can damage the human nervous system at high concentrations. In both water and sediment from the streams, one-year post-fire, mercury concentrations were higher.

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Concentrations of methylmercury, the most toxic form of mercury that’s made when microbes add carbon to mercury, were also 178% higher in water from burned streams. Insects that filtered stream water or ate debris also had higher levels. The compound becomes dangerous as it accumulates in animals over time and gets absorbed by tissues in the body, according to the World Health Organization.

“There hasn’t been a lot of work done on the effects of wildfire on mercury,” Austin Baldwin, a USGS research hydrologist who led the study, told the Idaho Statesman. “With wildfires increasing in both severity and frequency, there was interest with me and my co-authors on knowing what are the effects.”

Baldwin said that when wildfires come through an area, they burn vegetation, which loosens mercury-containing soil and causes erosion into streams and mercury contamination. More studies would need to be done to understand if mercury levels after wildfires are high enough to be a concern for humans, he added.

Mercury levels likely won’t stay high forever and will taper off with major rainfall or the first snow melt after the fire, Baldwin said.

While the best solution to keep mercury out of streams would be preventing wildfires, Baldwin thinks prescribed burns could help mitigate some of the effects. The USGS study found mercury concentrations went up more in areas where wildfires were worse.

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Prescribed burns, which are small fires set intentionally, can reduce the future risk of high-intensity fires by 64%, according to a study by Columbia and Stanford universities.

“If you can lower burn severities, you can also lower mercury,” Baldwin said.

When people are exposed to methylmercury, it often happens through fish consumption.

The Idaho Department of Health and Welfare’s Fish Consumption Advisory Project regularly tests fish in areas commonly contaminated with mercury. When mercury levels are too high in a species, the state agency issues advisories to avoid eating the species, said Drew Pendleton, the state toxicologist.

Many of the areas that cause fish advisories in Idaho are related to mining, and Pendleton is not “too concerned” about mercury increases from the wildfires. But the research could help inform the state on future sites for testing, he said.

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Pendleton recommends visiting the Center for Disease Control and Prevention and Health and Welfare websites to check for advisories on mercury exposure and learn the best methods to stay safe.

2024 The Idaho Statesman. Distributed by Tribune Content Agency, LLC.

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Wildfires are increasing toxic mercury in streams in Idaho, Oregon, Washington, study finds (2024, August 15)
retrieved 15 August 2024
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Idaho resolution opposing same-sex marriage advances

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Idaho resolution opposing same-sex marriage advances


For the second year in a row, House lawmakers will consider urging the U.S. Supreme Court to overturn its ruling legalizing same-sex marriage.

The nonbinding resolution, which carries no legal weight, says the decision in Obergefel v. Hodges violates the longstanding religious definition of marriage between one man and one woman.

“The current definition of marriage that allows for same-sex marriages is a defilement of the word marriage,” said Rep. Tony Wisniewski (R-Post Falls), who sponsors the measure.

The resolution further states that the Obergefel decision “arbitrarily and unjustly” rejects the historical definition of marriage.

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Idaho voters passed a constitution amendment in 2006 that defines marriage as between one man and one woman, which was invalidated by the Obergefel ruling.

Wisniewski said regulating marriages should be a power left to the states.

Rep. Brent Crane (R-Nampa) agrees.

“If you want to get things … closer to the people with respect to some of these more complex social issues, I think the best place for those things to happen is in the states,” Crane said.

Doing so is a risk, he said.

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“You may have states that choose to acknowledge [polyamorous relationships]. You may have states that choose to have relationships between adults and younger children,” Crane said.

Cities in neighboring Oregon and Washington, for example, are considering giving those in polyamorous relationships legal recognition.

But he said that risk is worth it to allow other states that choose to only recognize traditional marriages.

Four lawmakers on the House State Affairs Committee opposed the resolution.

Rep. Erin Bingham (R-Idaho Falls) said she’s tried to balance her own religious beliefs with those of others while considering the measure.

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“I do feel like that it is important for us to work together, to find ways to compromise and to live together in peace and mutual respect,” Bingham said.

The resolution now goes to the House floor for consideration.

House lawmakers last year passed a similar measure, but it never received a hearing in a Senate committee.

Copyright 2026 Boise State Public Radio

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University of Idaho professor awarded $10M after TikTok tarot influencer claimed she ‘ordered’ quadruple murders

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University of Idaho professor awarded M after TikTok tarot influencer claimed she ‘ordered’ quadruple murders


A University of Idaho professor won a $10 million judgment after a tarot TikTok influencer publicly pushed false claims that she was behind the savage quadruple slayings of four college students.

A Boise jury in US District Court ordered fortune-telling Texas TikToker Ashley Guillard on Friday to pay $10 million after concluding she falsely accused professor Rebecca Scofield of having a secret romance with one of the four victims and orchestrating their killings, the Idaho Statesman reported.

Following the verdict, Scofield thanked the jury and said she hopes the case sends a clear warning that making “false statements online have consequences in the real world.”

Ashley Guillard posted TikTok videos falsely linking a University of Idaho professor to the Idaho college murders, leading to a defamation lawsuit. TikTok/ashleyisinthebookoflife4

“The murders of the four students on November 13, 2022, were the darkest chapter in our university’s history,” Scofield told Fox News.

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“Today’s decision shows that respect and care should always be granted to victims during these tragedies. I am hopeful that this difficult chapter in my life is over, and I can return to a more normal life with my family and the wonderful Moscow community.”

Scofield, the university’s history department chair, filed the lawsuit in December 2022 — just weeks after Kaylee Goncalves, Madison Mogen, Xana Kernodle and Ethan Chapin were brutally stabbed to death at an off-campus rental home in Moscow, Idaho, on Nov. 13, 2022.

Guillard began uploading videos to her more than 100,000 TikTok followers in late November 2022, accusing Scofield of a secret relationship with one of the students and claiming she had “ordered” the killings, garnering millions of views across the social media platform.

The complaint states that Scofield had never met the victims and was out of state when the murders occurred.

Idaho murder victims Madison Mogen, 21, top left, Kaylee Goncalves, 21, bottom left, Ethan Chapin, 20, center, and Xana Kernodle, 20, right, and their two surviving roommates.

Even after being served with cease-and-desist letters and after police publicly confirmed Scofield had no connection to the murders, the Houston-based tarot reader continued posting videos, the history professor’s legal team argued.

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Guillard doubled down on her accusations against Scofield after being sued, posting a defiant video saying, “I am not stopping,” and challenging why Scofield needed three lawyers to sue her “if she’s so innocent.”

The professor’s legal team argued the defamatory accusations painted her as a criminal and accused her of professional misconduct that could derail her career.

Bryan Kohberger pleaded guilty to the savage slayings in July 2025 in a plea deal that took the death penalty off the table. AP

Bryan Kohberger, then studying criminology at Washington State University, pleaded guilty in July 2025 to the quadruple murders in a deal that took the death penalty off the table. He is currently serving four consecutive life sentences in Idaho.

In June 2024, Chief US Magistrate Judge Raymond Patricco found Guillard’s statements legally defamatory, leaving damages to be decided by a jury.

During the damages trial, Scofield described the anguish of seeing her name tied to the murders online, the Idaho Statesman reported.

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The off-campus home where four University of Idaho students were stabbed to death on Nov. 17, 2022, in Moscow, Idaho. James Keivom

However, Guillard, acting as her own attorney, insisted her comments were simply beliefs based on tarot card readings.

She claimed to have psychic powers and testified that she relied on tarot cards to try to solve the shocking homicides that shook the rural college town and sparked global attention.

It took jurors less than two hours to return their verdict, the outlet reported.

The jury awarded Scofield $7.5 million in punitive damages in addition to $2.5 million in compensatory damages.

With Post wires

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Gas prices expected to exceed $3 as the Iran conflict prompts supply shortages

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Gas prices expected to exceed  as the Iran conflict prompts supply shortages


BOISE, Idaho — AAA is warning Idaho gas consumers that pump prices will likely rise as the conflict in Iran disrupts oil and gas supply chains worldwide.

The ongoing turmoil in the Middle East will likely push the price for a gallon of regular gasoline past the $3 mark over the coming days.

“On one hand, the crude oil market had time to account for some financial risk in the Middle East as forces mobilized, but a supply shortage somewhere affects the global picture,” says AAA Idaho public affairs director Matthew Conde. “If tankers can’t move products through the region, there could be ripple effects.”

On Monday, March 2, the average price for a gallon of regular gasoline is $2.97, reports AAA, which is 12 cents more expensive than it was a month ago but 20 cents less than this time last year.

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State / Price: 1 gallon of regular gasoline

  • Washington / $4.37
  • Oregon / $3.92
  • Nevada / $3.70
  • Idaho / $2.97
  • Colorado / $2.89
  • Montana / $2.82
  • Utah / $2.74
  • Wyoming / $2.73

In terms of the most expensive fuel in the nation, Idaho currently ranks #14. However, buying a gallon of regular gas in neighboring states such as Oregon and Washington could cost a whole dollar more. In contrast, gas prices in Utah, Montana, and Wyoming are anywhere between 15 to 24 cents cheaper than fuel in the Gem State.





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