Robert Lepage, PhD., P.Eng.
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Robert Lepage, PhD., P.Eng.
@rtmlepage.bsky.social
Building Science Engineer + Climate Resilience Geek.
Of the 347ppm generation. He/him.
Pinned
Ah, ça ira!
Reposted by Robert Lepage, PhD., P.Eng.
There is no such thing as an intelligent report on increasing school absences due to chronic illness and mental health issues that does not lead with a discussion of the out-of-control virus that causes chronic illness and mental health issues.

@cbcnews.ca has seriously weird biases about COVID. 🙄
November 23, 2025 at 6:49 AM
Reposted by Robert Lepage, PhD., P.Eng.
Massive shoutout out to whoever handles the Royal Canadian Air Force’s social media account. They responded to every single comment on their already very solid Trans Day of Remembrance post and they responded like this…
November 22, 2025 at 1:03 AM
Reposted by Robert Lepage, PhD., P.Eng.
Ahahahaha 🤣 Elizabeth May explaining the tanker ban “especially to the attention of slow learners; Andrew Sheer, Danielle Smith, take note.”
November 22, 2025 at 12:04 AM
Did anything happen 5 years ago that could lead to a dramatic rise in illness?

Or is it that kids these days don't have enough of a stiff upper lip?

www.cbc.ca/news/canada/...
Kids are missing more school. Experts say mental health is a factor | CBC News
A CBC investigation finds that school time lost due to reported illness is up in all districts that provided data — more than tripling in some places compared to five years ago. While the data doesn’t...
www.cbc.ca
November 22, 2025 at 1:36 PM
Reposted by Robert Lepage, PhD., P.Eng.
Hypothesis: Lockdown could have been avoided if there’d been an early mask mandate.
November 20, 2025 at 8:44 PM
Reposted by Robert Lepage, PhD., P.Eng.
La COP 30 se conclut en beauté avec un spectacle de Monster Trucks https://www.legorafi.fr/?p=49389
La COP 30 se conclut en beauté avec un spectacle de Monster Trucks
Toute l'information selon des sources contradictoires.
www.legorafi.fr
November 21, 2025 at 3:08 PM
Reposted by Robert Lepage, PhD., P.Eng.
Why is immune escape such a problem with SARS-CoV-2?
Analysis of >1,000 antibodies to the spike protein to help design a workaround plan
www.cell.com/cell-systems...
One thousand SARS-CoV-2 antibody structures reveal convergent binding and near-universal immune escape
Feng et al. analyze over 1,100 SARS-CoV-2 antibody structures, including all 13 clinical monoclonals, mapping 99% of the receptor-binding domain surface. Their study reveals convergent paratope archit...
www.cell.com
November 21, 2025 at 4:46 PM
Reposted by Robert Lepage, PhD., P.Eng.
Reminder that no insurance means ... no mortgage. No mortgages, and ... well you can imagine what that does for housing/business/economy in general. Insurance will be the climate shock that breaks things, probably. 💣💥
"Climate shock." New study shows that rising property insurance premiums caused by growing weather extremes are cascading into the real estate market. Homes in the ZIP codes most exposed to hurricanes and wildfires would sell for an average of $43,900 less than they would otherwise.
November 20, 2025 at 11:19 PM
Reposted by Robert Lepage, PhD., P.Eng.
New from me, Rick Smith, and Peter Nicholson.

“Our policy advice is pretty simple: Clean up electricity and electrify everything possible. This is the nation-building project Canada needs…”

www.thestar.com/opinion/cont...
New data shows the world is embracing renewable energy. Canada can’t follow Trump’s fossil fuel obsession
North America at risk of becoming an island of fossil fuels in an electrifying world. Canada should take note and choose a better path.
www.thestar.com
November 20, 2025 at 12:47 PM
Reposted by Robert Lepage, PhD., P.Eng.
Eat out to Help Out was killing people, but they “kept it out of the news”.
November 20, 2025 at 6:53 AM
Billionaires are so rich because they are more intelligent and better than the rest of us.

Also...
I laughed at loud. These people are so pathetic; our enemies are numbskulls. They will kill us all and still not know hs physics.

COWEN: The stupidest question possible: Why don’t we just make more GPUs?

ALTMAN: Because we need to make more electrons.

conversationswithtyler.com/episodes/sam...
November 19, 2025 at 4:39 PM
Reposted by Robert Lepage, PhD., P.Eng.
NEW from me: A recent study finds that fully electrified homes in Handsworth, built to adhere to a draft version of the Future Homes standard, put less pressure on the grid than researchers expected.

www.theguardian.com/environment/...
Heat-pump homes put less strain on grid than expected, study shows
Analysis of new-builds in Birmingham suggests all-electric homes not only use less energy but vary in peak usage
www.theguardian.com
November 19, 2025 at 9:14 AM
#Adaptation Controversial take:
"Build Back Better" or "Build Back Wiser" is not prudent in a nonstationary climate.

If a disaster strikes, it means there's already exposure.

Sorry Sendai
November 18, 2025 at 7:56 PM
Reposted by Robert Lepage, PhD., P.Eng.
Things that will get you kicked out of academia forever:
- taking maternity leave at the wrong time
- spending too much time with your kids
- reporting harassment
- not moving every 2-3 years
- taking a partner's job/preferences into account
- mouthing off before tenure
A guy makes ONE tiny mistake (has a years-long friendship with the world's worst sex trafficker; brags about sexually harassing colleagues; is racist; says women are stupid) and his whole LIFE is blown up (does slightly fewer speaking engagements; keeps teaching at #1 university)??!?!?!?!?!
So Harvard is keeping this guy, but Claudine Gay had to step down over ginned up plagiarism accusations and bad-faith accusations of anti-Semitism.

Got it.
November 18, 2025 at 3:52 PM
Reposted by Robert Lepage, PhD., P.Eng.
My latest for @science.org: A remarkable set of high-resolution climate model runs, computed over 900 (!) days of supercomputing time, are revealing how warming-induced changes to Earth's wind patterns due can prime huge spikes in extreme rainfall.

But the MESACLIP runs also do much more than that.
High-resolution climate model forecasts a wet, turbulent future
With details as fine as short-term weather forecasts, model achieves newfound accuracy
www.science.org
November 18, 2025 at 2:35 PM
@poppendieck.bsky.social
Any recommendations for a PM2.5 sensor, +- 5ug/m3 that integrates nicely with a data acquisition system (e.g. Campbell Scientific)?
November 17, 2025 at 5:29 PM
The reason AI is being pushed everywhere is because its merchants realise they are all in a bubble and the only way they can survive is if they get "too big to fail" and get a taxpayer bailout.
NEW: Welcome to the Great AI Bubble. Yes, it’s here. And yes, it’s going to burst.

It’s also got way more in common with the Epstein scandal than you really want to know.

open.substack.com/pub/broligar...
The Great AI Bubble
Yes, it's a bubble. And yes, it's going to burst.
open.substack.com
November 16, 2025 at 1:44 PM
Reposted by Robert Lepage, PhD., P.Eng.
New post on estimating climate deaths per project. This is a very new approach, but in my view critical to honestly assessing the impact of oil & gas projects.

And totally doable.
Counting climate deaths per project
45 people died in Jamaica last week, from Hurricane Melissa. At roughly the same time typhoons killed at least 259 people in the Philippines. This post is dedicated to them, and their families. The…
feeltheheat.blog
November 15, 2025 at 5:54 PM
We all become disabled or we die. Compassion for our other humans (or even if purely selfish, yourself), is the least we can do. Alice was an oracle and we need to honour her life's work.
Our beloved Alice Wong has joined the ancestors. It was one of the great honors of my life to call Alice my friend, co-author & co-conspirator. She was a true genius, a force of nature the likes of which the world has never seen before. I love you, Alice, and am equal parts grateful and devastated
November 15, 2025 at 9:11 PM
Reposted by Robert Lepage, PhD., P.Eng.
Brevetoxins are potent neurotoxins produced by certain algae and cause significant health problems (“red tide” is one form). Even if you don’t care about marine life, you can get sick and even die just from breathing air near a shoreline w/ brevetoxin-producing algae. Climate change will kill us all
Harmful algal bloom (HAB) spread across 20,000 km2 & resulted in the deaths of millions of marine animals, from at least 550 species

Scientists found a novel, significant brevotoxin-producing algal species, Karenia cristata, in the multispecies Karenia HAB—1st time brevetoxins have been found in 🇦🇺
November 15, 2025 at 8:30 PM
Reposted by Robert Lepage, PhD., P.Eng.
If you need me, tap me on the shoulder. I’ll be happily working all day listening to this on a loop.
November 13, 2025 at 1:49 PM
Reposted by Robert Lepage, PhD., P.Eng.
“Don’t let the bastards grind you down. I love you all.”
November 15, 2025 at 6:15 AM
Reposted by Robert Lepage, PhD., P.Eng.
If CO2 emissions go to zero in 2050 (top), the sinks (green) will bring atmospheric CO2 back down (middle), & temperature will stabalise at ~1.7°C (bottom).

Going to zero today will keep us <1.5°C

Constant emissions leads to 2.6°C, rising rapidly thereafter.

www.nature.com/articles/s41...
November 14, 2025 at 8:23 AM
Procrustes tailoring services, making sure everything fits to size!
Narcissus cosmetics. You've got the look.
Sisypheus hauling services. You’ll keep calling us back.
November 14, 2025 at 5:02 PM