Robert Lepage, PhD., P.Eng.
@rtmlepage.bsky.social
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Building Science Engineer + Climate Resilience Geek. Of the 347ppm generation. He/him.
pinned post!
Ah, Ƨa ira!
about 1 year ago
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Robert Lepage, PhD., P.Eng.
Leipzig Institute for Meteorology
8 months ago
New paper: Explaining and predicting the Southern Hemisphere eddy-driven jet
@marleneclimate.bsky.social
www.uni-leipzig.de/en/newsdetai...
"The researchers found that 50 percent of the observed shift in the SH jet stream is directly attributable to global warming."
www.pnas.org/doi/10.1073/...
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New Insights into the Jet Stream Make Better Climate Predictions Possible
Jet streams are often referred to as the āmotorā of global weather: High-altitude wind currents steer areas of high and low pressure, playing a crucial role in shaping our weather. However, how these ...
https://www.uni-leipzig.de/en/newsdetail/artikel/neue-erkenntnisse-ueber-den-jetstream-ermoeglichen-bessere-klimavorhersagen-2025-07-15
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Robert Lepage, PhD., P.Eng.
Todd Woody
about 23 hours ago
ICYMI: With wildfire season looming, insurers have even abandoned California neighborhoods at low risk of burning, forcing tens of thousands of homeowners to obtain bare-bones coverage from the stateās insurer of last resort, a Bloomberg analysis shows. Free link
www.bloomberg.com/news/article...
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Even Low-Risk Homes Are Caught Up in Californiaās Climate Insurance Crisis
The stateās insurer of last resort is meant for high fire risk properties but homeowners in areas unlikely to burn are now being forced into the plan.
https://www.bloomberg.com/news/articles/2026-03-15/california-insurance-crisis-hits-even-homes-facing-lower-wildfire-risk?accessToken=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzb3VyY2UiOiJTdWJzY3JpYmVyR2lmdGVkQXJ0aWNsZSIsImlhdCI6MTc3MzU5NjQ2OSwiZXhwIjoxNzc0MjAxMjY5LCJhcnRpY2xlSWQiOiJUQlk0QzJLR1pBSkUwMCIsImJjb25uZWN0SWQiOiIyMjc1RTYyODc5NjY0NjIyOUExMkRCMjU1OEYzNjQ2QiJ9.hMhYYgeWjy_qSQvLmx85mmpjkpPblUX8K-jNxDm1aOg
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I HATE LaTeX
3 days ago
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@ukhadds.bsky.social
, any indication of how virions (e.g. SARS2, measles, flu, etc.) in suspended respiratory droplets decay in an environment with chlorine gas (e.g. natatoriums)? Higher acidity favours slower decay rates (IIRC), but I wasn't sure how the Cl- tampers with things.
3 days ago
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Robert Lepage, PhD., P.Eng.
Rachel Gilmore
6 days ago
The cost of my reporting stared me in the face last week, when two Nazis showed up to try to intimidate me for my journalism on a private night out. But thatās far from the only fallout of my latest investigation. I took a few days, watching the reaction -- and now Iāve got much more to share:
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Robert Lepage, PhD., P.Eng.
Brian Finucane
5 days ago
ā Former USG war crimes lawyer here. Apropos of SecDef's remarks this morning: Denial of quarterāeven the declaration of no quarterāis a war crime. And recognized as such by the US Government. From DoD's Manual for Military Commissions.
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Robert Lepage, PhD., P.Eng.
Prof Gavin Yamey
7 days ago
The Lemkin Institute for Genocide Prevention ābelieves that the U.S. is squarely within the early to middle stages of a genocidal process against trans people, the goal of which is to completely erase transgender people not only from public life but also from existence in the U.S. & globallyā
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"I worked my way up from admin assistant to senior vice president in less than a year. My dad's company is proof that upward mobility is possible with just a bit of hard work."
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8 days ago
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Robert Lepage, PhD., P.Eng.
Nature Portfolio
9 days ago
COVID-19 infection is associated with a 2.3-fold risk of developing acute kidney injury, a 1.4-fold risk of chronic kidney disease, and a 4.7-fold risk of end-stage renal disease compared to influenza, reports a study published in Communications Medicine. š§Ŗ
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The risk of kidney disease increases following SARS-CoV-2 infection compared to influenza - Communications Medicine
Zhang et al. utilized a large real-world dataset from more than three million adults in the United States to compare the incident of kidney disease risks following COVID-19 and influenza infections. The study found that COVID-19 is associated with a higher risk of acute kidney injury, chronic kidney disease, and end stage renal disease than influenza.
https://go.nature.com/4b7IX8G
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Robert Lepage, PhD., P.Eng.
David Elfstrom š
12 days ago
"There's something going around" Yeah. It's COVID.
wwater.ca/Ontario/Toro...
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Robert Lepage, PhD., P.Eng.
Kate Mackenzie
10 days ago
Threading some stuff about oil & oil markets, just basic but hope it helps: 1/ oil markets are what you call āfinely balancedā. Supply is usually very very close to demand/consumption. Demand is hard to shift *quickly* in response to supply hiccups. So even small supply changes = big price effects
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Robert Lepage, PhD., P.Eng.
Dr. Damien P. Williams can't think of a fun display name right n
11 days ago
So⦠I've been writing for about 18 years on the idea that if you somehow manage to make meaningfully conscious machine minds & then you treat them as tools, then you're enslaving those minds, and that's pretty messed up. And this ties into something else I've re-upped recently: LLMs can't say "No."
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TIL Mark Hamill was the scientist in my favourite movie! Thank you
@markhamillofficial.bsky.social
!
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11 days ago
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Can't go to war crime prison if you nuke the Hague.
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11 days ago
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Robert Lepage, PhD., P.Eng.
Joseph D. Ortiz
13 days ago
We need to be building a grid for the 21st century. Mechanical gas peaker plants, which requires ~10 minutes to respond to a grid crisis, cannot complete with electronic, grid-scale battery energy storage which responds almost instantly. š§Ŗšš”āļøšØš§š
www.utilitydive.com/news/the-phy...
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The physics of reliability: Why gas peakers alone canāt save the modern grid
Most outages donāt start as a multihour energy shortage; they start as a frequency crisis. If you only have gas, youāre trying to stop a bullet with a shield that takes 10Ā minutes to lift, writesĀ Arun...
https://www.utilitydive.com/news/the-physics-of-reliability-why-gas-peakers-alone-cant-save-the-modern-gri/811716/
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Robert Lepage, PhD., P.Eng.
Rachel Gilmore
13 days ago
Two white nationalists I exposed in a recent article showed up to try to intimidate me in person last night. This is a press freedom issue. Hereās what happened:
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Right wing propaganda works...
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13 days ago
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Is this a good thing?
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15 days ago
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Robert Lepage, PhD., P.Eng.
Swapnil Hiremath ššØš¦
15 days ago
This story is nuts The journal āPediatrics and Child healthā has been published an article type, for case reports, that are made up and fictional without having any clear notice š±
retractionwatch.com/2026/03/03/c...
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A medical journal says the case reports it has published for 25 years are, in fact, fiction
A Canadian journal has issued corrections on 138 case reports it published over the last 25 years to add a disclaimer: The cases described are fictional. Paediatrics & Child Health, the journalā¦
https://retractionwatch.com/2026/03/03/canadian-pediatric-society-journal-correction-case-reports-fictional-paediatrics-child-health/
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Robert Lepage, PhD., P.Eng.
Rachel Gilmore
15 days ago
Iāve unmasked a white nationalist fight club in my city: Montreal. After weeks of work (with help!), I can reveal an Olympian as a member of the Frontenac Active Club ā one who, unbeknownst to the owners, brought them to a local gym for training and propaganda photos. Hereās my investigation:
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It is Joe Biden's fault the Republicans are doing bad things.
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17 days ago
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Is UoT's Prof. Siegel on BSky?
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17 days ago
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This is the message Mark Carney should have written, not some realpolitik pablum. If you stand for nothing, you have no values.
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18 days ago
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Robert Lepage, PhD., P.Eng.
Timothy Snyder
18 days ago
How to understand war with Iran? We must get away from propaganda. Facts suggest two interpretive frameworks: a foreign war as a mechanism to destroy democracy at home; and a foreign war as an element of personal corruption by the president of the United States.
snyder.substack.com/p/why-attack...
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Why Attack Iran?
Our Authoritarianism and Our Corruption
https://snyder.substack.com/p/why-attack-iran
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Robert Lepage, PhD., P.Eng.
Aarne Granlund
19 days ago
"They said students are more sociable, bullying has significantly decreased, and the change can even be seen in school hallways." A lesson for adults, too?
yle.fi/a/74-20212749
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Finland's smartphone ban gave middle-schoolers a new way of life, principals say
"Students look each other in the eye and say hello. This makes me happy," a principal in Lahti said.
https://yle.fi/a/74-20212749
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Robert Lepage, PhD., P.Eng.
Dr. Jen Irwin
19 days ago
www.nature.com/articles/s43...
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The risk of kidney disease increases following SARS-CoV-2 infection compared to influenza - Communications Medicine
Zhang et al. utilized a large real-world dataset from more than three million adults in the United States to compare the incident of kidney disease risks following COVID-19 and influenza infections. T...
https://www.nature.com/articles/s43856-026-01460-6
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Robert Lepage, PhD., P.Eng.
Eric Topol
20 days ago
What accounts for the progression from healthy aging to Alzheimer's disease over an extended period of time? The critical role of the immune system, particularly T cells and microglia. A new, excellent review
www.cell.com/immunity/abs...
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Robert Lepage, PhD., P.Eng.
Linsey Marr
20 days ago
There has been a lot of interesting research on the pH of respiratory droplets and how it affects flu virus. We looked at large saliva droplets exposed to low and high CO2 and only saw a difference in viability at 80% RH with low CO2. pH changes were small.
pubs.acs.org/doi/10.1021/...
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Influence of Carbon Dioxide and pH on Influenza Virus in Sessile Saliva Droplets
Upon exhalation, virus-laden respiratory droplets experience rapid changes in environmental conditions that lead to chemical and physical alterations that can affect virus infectivity. By manipulating...
https://pubs.acs.org/doi/10.1021/acs.est.5c12672
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Robert Lepage, PhD., P.Eng.
Al Haddrell
20 days ago
Since measles is coming back, here's a question: What is the "half-life" of airborne decay of measles? Answer: We have no idea. People think it's long (1 to 2 hours). Why don't we know? Funders largely felt there wasn't a need to measure it since it was managed with vaccines.
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Robert Lepage, PhD., P.Eng.
Conor Browne
20 days ago
3. I agree entirely with Dr. Nath - dementia will increase in prevalence in the coming years and will also start to develop at younger ages than would otherwise be expected. This is the primary reason I mitigate against infection: to protect my brain. /end
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This comes across as "I don't like the results from these peer reviewed articles in well respect journals so it must be untrue". Was that the intent?
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21 days ago
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Robert Lepage, PhD., P.Eng.
22 days ago
Long Covid ruled as occupational disease in nurses
https://www.europesays.com/ch/17407/
Long Covid confirmed as an occupational disease in nurses. Keystone-SDA Baloise Insurance must recognise the Long Covid diseaseā¦
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Long Covid ruled as occupational disease in nurses - Switzerland
Long Covid confirmed as an occupational disease in nurses.
https://www.europesays.com/ch/17407/
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Robert Lepage, PhD., P.Eng.
Kasey Gifford
22 days ago
AM I SUPPOSED TO BE SUPRISED? IS THERE ANYONE OUT THERE WITH HALF A FUNCTIONING BRAINCELL AND A PULSE THAT'S SUPRISED??
fortune.com/2026/02/24/d...
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Discord cuts ties with Peter Thiel-backed verification software after its code was found tied to US surveillance efforts | Fortune
Discord cut ties with its age-verification partner after exposed code fueled federal-reporting concerns, months after a breach hit 70,000 users.
https://fortune.com/2026/02/24/discord-peter-thiel-backed-persona-identity-verification-breach/
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Don't trust LLMs.
23 days ago
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Robert Lepage, PhD., P.Eng.
Timothy Snyder
23 days ago
We are deciding right now whether we want to be a country with ethnic cleansing and concentration camps.
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Robert Lepage, PhD., P.Eng.
Linsey Marr
23 days ago
Our latest paper shows that most aerosol sampling methods may underestimate infectious virus in air. We observed 100x more infectious flu virus and SARS-CoV-2 if it deposited directly on cells (more realistic) rather than in liquid first and then transferred to cells.
pubs.acs.org/doi/full/10....
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Loss of Infectivity of Influenza Virus and SARS-CoV-2 during Aerosol Sampling
Our understanding of transmission of influenza virus and other respiratory viruses is limited by the difficulty of detecting infectious viruses in aerosol particles. Most aerosol sampling methods are believed to contribute to virus inactivation, but the magnitude of this sampling artifact is unknown. To investigate this question, we aerosolized influenza A virus (IAV) and SARS-CoV-2 suspended in human saliva into a small chamber (3.7 L). Aerosols settled for 10 min onto either cells or a thin layer of liquid medium that was immediately transferred to cells for plaque assay. Aerosols that deposited directly onto cells led to the formation of 100Ć more plaque forming units (PFU) compared to aerosols that deposited first into liquid medium. Further experiments ruled out uneven aerosol distribution in the chamber or inefficient virus recovery as causes of this discrepancy. These findings indicate that aerosolized IAV and SARS-CoV-2 lost infectivity by approximately 2 log10 PFU within ā¼10 min unless they attached to cells quickly. As natural infection via inhalation occurs by direct deposition of the virus onto cells, we hypothesize that sampling directly onto cells more accurately reflects the potential for exposure to lead to infection.
https://pubs.acs.org/doi/full/10.1021/acs.estlett.6c00020
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Robert Lepage, PhD., P.Eng.
Jack - amatica health
26 days ago
Long COVID blood signal in this study: Many more tiny āmicroclotsā plus higher markers of some overactive white blood cells. The two also often show up stuck together in the same clumps. This pattern may help with measurement and subgrouping.
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Robert Lepage, PhD., P.Eng.
BK. Titanji
27 days ago
At some point it ceases to be vaccine skepticism. It becomes a a cult-like conviction to shun vaccines and science against all evidence or reason. Even if it means maiming your own child or worse watching them die from a preventable illness. This is unbelievably tragic and this is where we are.
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Robert Lepage, PhD., P.Eng.
Elizabeth Jacobs, PhD
27 days ago
A new paper shows that less than 2 months of exposure to Twitterās algorithmic feed significantly shifts peopleās political views to the right. Moving from chronological feed to the algorithmic feed also increases engagement. This is one of the most concerning papers Iāve read in awhile.
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So I saw this Air Quality notice and thought: that's odd. I had never heard of poor air quality from melting snow. So anyway, pulled out the PM2.5 meter and here we are: high PM2.5. Has it always been this way, or is something different?
29 days ago
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Robert Lepage, PhD., P.Eng.
about 1 month ago
The American Academy of Actuaries warns that dismantling NCAR would degrade the catastrophe models insurers depend on to price climate riskādriving up premiums and threatening coverage availability nationwide. "Uncertainty carries a positive cost."
www.riskmarketnews.com/trumps-clima...
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Trump's Climate Supercomputer Plans Threaten US Insurance Market: Actuaries
A new letter from the American Academy of Actuaries draws a direct line between the planned dismantling of NCAR and higher homeowners insurance costs for US consumers.
https://www.riskmarketnews.com/trumps-climate-supercomputer-plans-threaten-us-insurance-market-actuaries/
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Has anyone investigated whether the 90's satanic panic was pre-emptive disruption to mask Epstein's activities? A lot of the allegations back then align with revealed materials from the files.
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30 days ago
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One of the greatest fears for Canadian engineers is to find your name in the Blue Pages: the disciplinary section of the engineering journals. Here they list out everything you have done wrong and why it is contrary to professional practice and ethics.
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about 1 month ago
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Robert Lepage, PhD., P.Eng.
Trish Greenhalgh
about 1 month ago
"Data not available"? How many centuries ago did we establish that it's a good idea to have accurate, timely data on factors that can contribute to major infectious disease outbreaks?
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Robert Lepage, PhD., P.Eng.
Katharine Hayhoe
about 1 month ago
Bluesky is the new science Twitter, new study by
@whysharksmatter.bsky.social
and Julia Wester concludes! "Results show that for every reported professional benefit that scientists once gained from Twitter, scientists can now gain that benefit more effectively on Bluesky than on Twitter."
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Scientists no Longer Find Twitter Professionally Useful, and have Switched to Bluesky
Synopsis. Social media has become widely used by the scientific community for a variety of professional uses, including networking and public outreach. For
https://academic.oup.com/icb/article-abstract/65/3/538/8196180?login=false
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Robert Lepage, PhD., P.Eng.
Philip Mai
about 1 month ago
Palantir, Deloitte, and the private prison giant GEO Group took in more than $22 billion from ICE and CBP last year. Behind the spreadsheets and contracts, there's a quieter truth: someone is getting rich from cages, borders, and human pain. Profit has always been fluent in the language of cruelty.
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Companies reap $22bn from Trumpās immigration crackdown
Palantir and Deloitte among beneficiaries of spending by government agencies
https://www.ft.com/content/c74170d3-237d-459c-8642-bfd71530897d
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Robert Lepage, PhD., P.Eng.
MdDoogie3
about 1 month ago
To everyone thanking me, much appreciated but not why I posted! Pls support your local immigrant defense group like: The Immigrant Law Center of Minnesota:
www.ilcm.org/donate/
Or my hometown LUCE:
www.lucemass.org/donate
Or Google your city/state & āimmigrant defenseā to find your local heroes!
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Robert Lepage, PhD., P.Eng.
Michael E. Mann
about 1 month ago
āA good way of dealing with overpopulationā: Epstein files reveal how the rich fuel climate denialism | Article by
@ktoussaint.bsky.social
for
@fastcompany.com
:
www.fastcompany.com/91490280/eps...
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'A good way of dealing with overpopulation': Epstein files reveal how the rich fuel climate denialism
Jeffrey Epstein and his vast network of elite figures routinely traded in myths that undermine climate progress. Experts say it's not an accident.
https://www.fastcompany.com/91490280/epstein-files-how-ultra-wealthy-peddle-climate-denialism
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Robert Lepage, PhD., P.Eng.
Stef "inclusion is a human right" Christensen
about 1 month ago
Oh hey!!!
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Robert Lepage, PhD., P.Eng.
Carl Quintanilla
about 1 month ago
HARVARD BUSINESS REVIEW: ā.. In our in-progress research, we discovered that AI tools didnāt reduce work, they consistently intensified it.ā
hbr.org/2026/02/ai-d...
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