Extreme Temperature Diary- Tuesday July 21st, 2026/Main Topic: Out-of-Control Canadian Wildfires Prompt Calls for ‘Nuremberg Trials for Big Oil

The main purpose of this ongoing blog will be to track planetary extreme, or record temperatures related to climate change. Any reports I see of ETs will be listed below the main topic of the day. I’ll refer to extreme or record temperatures as ETs (not extraterrestrials).😜

Here is a new feature for this blog, which I will add daily. This is the latest inciteful Green News Report from my friends Desi Doyen and Brad Friedman at Progressive Voices. Hit ‘continue reading,’ listen, then hit return to see my daily topics:

Amazon.com : Guy Walton world of Thermo

Well, we seem to be …www.lemonde.fr/en/campus/ar…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2026-07-21T08:53:48.055Z

Out-of-Control Canadian Wildfires Prompt Calls for ‘Nuremberg Trials for Big Oil’ | Common Dreams

Out-of-Control Canadian Wildfires Prompt Calls for ‘Nuremberg Trials for Big Oil’

“Climate change isn’t a tragedy, it’s a crime. The fossil fuel industry are arsonists at a global scale. It’s their pollution that’s fueling these horrific wildfires,” one climate advocate told Common Dreams.


Olivia Rosane

As wildfires raged across Canada on Thursday, sending dangerous smoke across the border into major US cities, climate advocates called for accountability for the fossil fuel industry, which knew for decades that its products were largely responsible for the climate crisis, yet chose to push climate denial instead.

While fire is a natural part of the lifecycle of Canada’s boreal forests, the heating of the atmosphere due to the burning of oil, gas, and coal has made fires more frequent and extreme.

“We need Nuremberg trials for Big Oil,” the youth-led Sunrise Movement wrote on social media in response to the fires.

Climate Defiance agreed, posting, “Nuremberg-style trials are in order for the fossil fuel executives who knew what they were doing to our children’s futures and did anyway.”

There were 884 fires burning in Canada on Thursday, with 124 out of control, according to the country’s national wildland fire summary. Over 100 fires were raging in Ontario alone, where they have forced the evacuation of at least 15 rural communities; destroyed homes in the Indigenous community of Collins First Nation, or Namaygoosisagagun; and polluted the skies over parts of the upper Midwest and Northeastern US.

As of Thursday evening Eastern time, the four cities with the worst air quality in the world were Chicago, Detroit, New York, and Torontoaccording to IQAir.

People have shared dramatic footage of the fires on social media. One video shows a train moving through a blaze near Armstrong, Ontario. Thankfully, all crew members were evacuated safely, The Guardian reported.

Indigenous photographer Nadya Kwandibens shared images of flames rising over a lake with the words, “”My family hometown, Collins Ontario, is GONE.“

Residents of the community fled the blaze in boats before the flames damaged and destroyed several homes and other structures, according to CBC News.

“Collins has burned to the ground. This is a tragedy and we are grateful that everyone got out safely,” Lise Vaugeois, the provincial representative for the region, said, as The Guardian reported. “Fires are part of a natural cycle, but the extreme temperatures we are experiencing across the county and the growing severity of weather events are indicators of climate change.”

Laura Chasmer, a professor of geography and the environment at the University of Western Ontario, noted that fires in Canada like the ones raging across Ontario have increased since 2015.

“This is associated with some of the extreme climate warming that we’ve been seeing, and the atmospheric drying of the surface,” she told BBC News.

Brandi Morin, a Cree-Iroquois-French journalist from Treaty 6 territory in Albertanoted in her Substack that Canada was warming at twice the global average. Despite this, the Canadian government has made progress on three major fossil fuel pipelines this July.

“Every barrel these new pipelines are built to move adds to the exact warming that’s turning our boreal forests into tinder,” Morin wrote.

On the other side of the border, Michigan regulators late Wednesday approved important permits from the controversial Enbridge Line 5 pipeline.

Political leaders and climate advocates responded to the fires and smoke with calls to abandon fossil fuel projects, transition to renewable energy, and hold oil and gas companies accountable for the harms they have caused.

“We have the technology and the policy roadmap to replace fossil fuels with green energy extremely rapidly. The only thing stopping us is a handful of billionaires getting rich while our world burns,” the Sunrise Movement said.

As smoke drifted over Boston on Wednesday, Sen. Ed Markey (D-Mass.) wrote on social media: “Look outside in Massachusetts right now. The climate crisis is here. Wildfire smoke is suffocating our communities and our children are breathing dirty air. We need a Green New Deal.”

“Climate change isn’t a tragedy, it’s a crime. The fossil fuel industry are arsonists at a global scale. It’s their pollution that’s fueling these horrific wildfires,” Jamie Henn, the director of Fossil Free Media, told Common Dreams. “Instead of approving new pipelines, the Canadian government should be holding the industry accountable and using their record profits to help communities on the frontlines of this crisis.”

Our work is licensed under Creative Commons (CC BY-NC-ND 3.0). Feel free to republish and share widely.

Olivia Rosane

Olivia Rosane is the opinion editor and a staff writer for Common Dreams.

Full Bio >

Yes, we climate scientists have long known of the World Cup defeat/temperature spike effect

Michael E. Mann (@michaelemann.bsky.social) 2026-07-20T19:33:01.610Z

As Nahel discusses below, this event was caused by an extreme downslope (foehn) wind event–but that, in turn, was amplified by very warm & moist airmass generating huge snowfalls in high elevation Andes due to record-warm ocean waters in eastern tropical Pacific. #ElNiño

Daniel Swain (@weatherwest.bsky.social) 2026-07-20T18:31:05.497Z

Meteorological models forecast an unprecedented 50C heatwave across Europe, as a massive heat dome threatens to shatter all-time temperature records in Spain.streamlinefeed.co.ke/news/europe-… #FossilFuels #Meat #Dairy #Collapse #Climate #Europe

The Final Report (@firehorse249791.bsky.social) 2026-07-20T11:54:01.823Z

"It would be a mistake to think that the climate crisis has reached a “new normal,” since the world continues to warm as fossil fuel pollution piles up in the atmosphere.It’s an ever-shifting baseline toward more extreme conditions as long as we continue to warm the planet with carbon pollution.”

LyndallTerrier (@lyndallterrier.bsky.social) 2026-07-20T21:12:48.266Z

A harrowing visual of the smoke from 100 wildfires burning across northern Ontario, Canada. Climate change is making fires all around the world more unpredictable and dangerous. We to stop climate pollution from coal, oil and gas if we want to secure a safer future for all. Data: NASA GEOS-FP

(@climatecouncil.org.au) 2026-07-20T03:31:32.406021Z

www.nytimes.com/2026/07/18/w…Lots of great insights from @mikeflannigan.bsky.social in this article!

Jennifer Murphy (@envchemjen.bsky.social) 2026-07-18T16:19:59.851Z

Graphs showing cumulative area burned and carbon emissions in Ontario. Note in terms of area burned 2021 is the top spot but 2026 is top spot in terms of carbon emissions. Both are correct. The reason for this is that the 2026 fires are more severe – consumed more biomass (greater depth of burn).

Mike Flannigan (@mikeflannigan.bsky.social) 2026-07-19T23:12:28.967Z

"What kept PA so hot this July? Blame the heat dome" by Jessica Simmons for @keystonenewsroom.bsky.social: keystonenewsroom.com/news/environ…

Michael E. Mann (@michaelemann.bsky.social) 2026-07-21T01:34:20.864Z

Preliminary maximum rainfall amounts exceeding 20-25" have occurred during the last four days across parts of south-central TX, leading to catastrophic flooding in the area. Raining continues across south-central TX.

National Weather Service (@nws.noaa.gov) 2026-07-17T18:50:31.068Z

There is no evidence of any departure from expectations based on standard climate model projections. See our recent article: www.pnas.org/doi/10.1073/…

Michael E. Mann (@michaelemann.bsky.social) 2026-07-20T22:20:38.938Z

Latest "plume" of El Niño forecasts, via @climate.columbia.edu. Consensus dynamical forecast is now an HISTORICALLY STRONG max Nino3.4 ~3.0C (statistical forecasts are pointing toward still very strong ~2.5C). There is still a wide range of estimates, with some models reaching astonishing ~4.7C.

Michael E. Mann (@michaelemann.bsky.social) 2026-07-20T18:51:24.020Z

A slippery slope to cherry-picking. Suppose we instead judge by how well models predicted the DJF '24/25 La Nina (iri.columbia.edu/our-expertis…). Then we would surely eliminate NCEP CFSv2 (which greatly over-predicted that event). That takes our most bullish model this cycle out of the mix.

Michael E. Mann (@michaelemann.bsky.social) 2026-07-20T22:50:40.290Z

Each month, more than 10,000 young people use poetry to exchange their feelings and thoughts about the issues that touch them, including mental health and climate change @katharinehayhoe.com @youthclimatej.bsky.social @coveringclimatenow.org www.nationalobserver.com/2026/07/20/o…

Patty Lane (@pattylane.bsky.social) 2026-07-20T19:12:55.715Z

New: Bertha is over performing, Now 60 mph! Why? Partly very hot #Gulf sea surface temps near the center, and it will move into even hotter water as it moves west. A #hurricane is unlikely because the system will face an uphill battle from strong shear. 1/

Jeff Berardelli (@weatherprof.bsky.social) 2026-07-21T15:38:58.284Z

Bertha Battles Wicked Wind Shear!It’s not often you see a storm with 80mph of shredding shear nearby, but that will develop today high above #Florida, decoupling the storm. The result is Bertha, naked and decapitated, with virtually all convection (thunderstorms) skewed to the south side… 1/

Jeff Berardelli (@weatherprof.bsky.social) 2026-07-21T12:05:02.652Z

Wicked Wind Shear!Sound ⬆️ for #Science Watch as Wind shear increases to 70mph + on the east side of our Gulf system. Storm will struggle. The opposing surface (white arrows) vs upper levels winds (red arrows) shreds the system, skewing the thunderstorms to the south side, leaving land dry.

Jeff Berardelli (@weatherprof.bsky.social) 2026-07-20T22:32:14.589Z

Over the last ten days, monsoonal flow has brought much needed moisture to the Southwestern United States.

(@cira-csu.bsky.social) 2026-07-20T21:42:28.671Z

Global solar capacity exceeds 3000 GW in May, doubling wind power capacitywww.energiaestrategica.com/en/notes/esp…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2026-07-21T09:24:41.976Z

www.theguardian.com/environment/…On a Colorado farm, solar panels bring shade for plants, power – and cash: in pictures

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2026-07-21T09:19:52.197Z

The little big battery using local smarts and deeper storage to help fill gap in most renewable gridreneweconomy.com.au/the-little-b…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2026-07-21T08:21:07.346Z

Geothermal startups racing to build next-generation facilities that can supply clean, around-the-clock power to data centers and states with decarbonization mandates. www.canarymedia.com/articles/geo…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2026-07-21T08:18:50.530Z

AI new nuclear ? Don't believe the hype.thebulletin.org/2026/07/data…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2026-07-20T21:57:18.561Z

Rosatom Russian nuclear corp is cutting its investment program by nearly 50% and reducing operating costs amid worsening economic conditions. oilprice.com/Alternative-…

Dr Paul Dorfman (@drpauldorfman.bsky.social) 2026-07-21T07:49:02.774Z

"Trump Lashes Out at National Academies of Sciences Over Climate Guide For Judges" by @dennispillion.bsky.social for @insideclimatenews.org: insideclimatenews.org/news/2007202…

Michael E. Mann (@michaelemann.bsky.social) 2026-07-21T00:37:22.808Z

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