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Study finds urban smoke from 2025 LA Eaton Fire carried high levels of lead

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Coverage spectrum

Covered by 3 outlets, mostly right-leaning (67%).

3 articles in total. The spectrum counts each outlet once and leaves opinion out. How we measure bias

A study published Wednesday in Science Advances reports that smoke from the 2025 Eaton Fire in Los Angeles exposed millions of residents to lead levels about 80 times typical background levels over 24 hours. Researchers from the California Institute of Technology compared the fire’s smoke with wildfire smoke and found the urban plume held more lead, arsenic and halogens, linked to burning vehicles, building materials and electronics. Co-author Haroula Baliaka said the work fills a research gap. Another account gives the number exposed as about 7 million Californians.

Headline and summary written by Mantle’s AI from the coverage below, under published rules. How this works

What happened

Key points

Each point shows who reports it, from Far Left to Far Right.

  1. Caltech researchers report in Science Advances that urban smoke from the 2025 Eaton Fire carried more lead and other metals than wildfire smoke.

    Reported byCenter1Right1Far Right1See the outletsHide the outlets
    Center
    Scripps News
    Right
    New York Post
    Far Right
    The Daily Caller

  2. The study reports lead levels in the smoke about 80 times typical background levels during a 24-hour period.

    Reported byCenter1Right1See the outletsHide the outlets
    Center
    Scripps News
    Right
    New York Post

  3. The urban smoke had more lead, arsenic and halogens than wildfire smoke, substances linked to burning vehicles, building materials and electronics.

    Reported byCenter1Right1See the outletsHide the outlets
    Center
    Scripps News
    Right
    New York Post

  4. Coverage reports that millions of Los Angeles residents were exposed to the smoke; one account puts the figure at about 7 million Californians.

    Reported byCenter1Right1Far Right1See the outletsHide the outlets
    Center
    Scripps News
    Right
    New York Post
    Far Right
    The Daily Caller

  5. The researchers used the ASCENT network, which measures the chemical composition of airborne particles in real time.

    One outletThe Daily Caller· Far Right

  6. The study was published on Wednesday in the journal Science Advances.

    Reported byCenter1Right1Far Right1See the outletsHide the outlets
    Center
    Scripps News
    Right
    New York Post
    Far Right
    The Daily Caller

How each side tells it

Compare views

Every side reports that Caltech researchers found urban smoke from the 2025 Eaton Fire carried more lead and other metals than wildfire smoke. The center’s AP report sticks to the study, while right-side outlets stress the millions exposed, and the New York Post uses alarm words.

  • the left

    No coverage yet

    No left-leaning outlet that Mantle follows has covered this story yet. That absence is part of the picture.

  • the center

    1 outlet

    Center coverage is a single Associated Press report run by Scripps News, and its headline states the study’s finding in neutral terms.

    Smoke from LA fires exposed millions of people to high levels of toxic heavy metals, study says
    Scripps NewsCenterAll center headlines

  • the right

    2 outlets

    Right-side headlines attribute findings to a study; the New York Post adds alarm with “devastating” and “distressing”, while the far-right Daily Caller headline is plainer and names the study.

    Devastating chemical aftermath of historic deadly LA fire revealed in Sensational language“distressing”Describing the study as distressing adds an emotional judgement that the reported findings do not establish.More neutral: newDisagree with this highlight? study
    New York PostRightAll right-leaning headlines

The words they chose

Language to notice

Words that carry a judgement beyond the facts. Tap a highlighted word anywhere on the page to see why.

  • Left

    Has not covered this story.

  • Center0

    No loaded words in its own voice.

  • Right1

    distressing

In the outlets’ own words

  • Sensational language

    distressingMore neutral: new

    Describing the study as distressing adds an emotional judgement that the reported findings do not establish.

    Devastating chemical aftermath of historic deadly LA fire revealed in distressing study

    Used byNew York Post (Right)

See the full language guide

See for yourself

Side by side

What each side leads with and what it leaves out. Open a side to read its headlines.

From the left

0 outlets

No left-leaning outlet that Mantle follows has covered this story yet. That absence is part of the picture.

From the center

1 outlet

Leads with

  • lead and other metals in smoke
  • urban versus wildfire smoke difference
  • study’s measurement findings
See the headline from the centerHide the headlines
  • Scripps NewsCenterAssociated Press report

    Smoke from LA fires exposed millions of people to high levels of toxic heavy metals, study says

    At the height of the Los Angeles fires in 2025, millions of residents were exposed in a 24-hour period to toxic lead levels from smoke that were 80 times higher than the typical background level, according to a new study. …

    Read at Scripps News (opens in a new tab)

From the right

2 outlets

Leads with

  • millions exposed to toxic metals
  • 80 times normal lead levels
  • dangers to city residents
See the 2 headlines from the rightHide the headlines
  • The Daily CallerFar Right

    Millions Of Residents Exposed To Toxic Metals From LA Fires, Study Shows

    As homes ignited and burned down during the 2025 Los Angeles fire, millions of California residents were exposed to a high concentration of airborne toxic metals, a new study discovered. …

    Read at The Daily Caller (opens in a new tab)
  • New York PostRight

    Devastating chemical aftermath of historic deadly LA fire revealed in Sensational language“distressing”Describing the study as distressing adds an emotional judgement that the reported findings do not establish.More neutral: newDisagree with this highlight? study

    A new study found lead concentrations soared to 80 times normal levels.

    Read at New York Post (opens in a new tab)

The stories you read build My Mix, a private picture of which sides cover the stories you choose, kept on this device. What is My Mix?

The left is Far Left and Left together. The right is Right and Far Right together. Every outlet keeps its own five-point rating.

Who reported it when

How the coverage built up

  • Left

    No report yet

    From the outlets Mantle follows

  • Center

    First to report

    Scripps News, Oct 28, 6:24 PM EDT

  • Right

    3 hr later

    Its first report, Oct 28, 9:26 PM EDT

See the order the outlets reported inHide the order
  1. Scripps NewsCenterOct 28, 6:24 PM EDT
  2. New York PostRightOct 28, 9:26 PM EDT
  3. The Daily CallerFar RightOct 29, 4:48 PM EDT

Times are the ones the outlets published in their own feeds, in Eastern time. Opinion is left out.

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