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Chris Lewis

@chrislewis.bsky.social
37 followers 66 following 214 posts

Food and agriculture in a hot and stormy world. PhD student at UW-Madison. toughgrowing.substack.com

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Chris Lewis @chrislewis.bsky.social · 08/10/2026
Planted some fall Kernza (perennial wheat) and mulched with the comfrey that grows like a weed all over the farm.
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Chris Lewis @chrislewis.bsky.social · 08/10/2026
"Releasing over 700 files at once is not a demonstration of scholarship, but a demonstration of power."
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Chris Lewis @chrislewis.bsky.social · 08/10/2026
If college women started boycotting fraternity parties FP would surely also throw a fit about that. I didn't read the article but maybe @michaelhobbes.bsky.social @notalawyer.bsky.social will do it for us.
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Reposted by Chris Lewis
Peter Gleick @petergleick.bsky.social · 04/10/2026
The rise in dengue in the US was predicted a quarter century ago by #climate scientists in the first US National Climate Assessment. This article doesn't mention climate change. thehill.com/policy/healt...
thehill.com
Florida’s dengue outbreak reportedly largest US has seen in decades
A dengue fever outbreak in the state of Florida appears to have grown to the largest in the continental U.S. in decades, totaling 252 reported cases this year in the Sunshine State according to an …
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Chris Lewis @chrislewis.bsky.social · 03/10/2026
Source: www.science.org/doi/10.1126/...
science.org
Global Consequences of Land Use
Land use has generally been considered a local environmental issue, but it is becoming a force of global importance. Worldwide changes to forests, farmlands, waterways, and air are being driven by the need to provide food, fiber, water, and shelter to ...
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Chris Lewis @chrislewis.bsky.social · 03/10/2026
If all yield tradeoffs are off limits, we will never build the world we want. We need to be able to give up some biofuel production! This, from @globalecoguy.bsky.social, is the better model.
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Chris Lewis @chrislewis.bsky.social · 25/09/2026
Super El Niño threatens Central America food security, IRC says www.reuters.com/business/env...
reuters.com
Super El Niño threatens Central America food security, IRC says
A historic super El Niño weather pattern, expected to peak between November 2026 and January 2027, threatens to rapidly ​deteriorate food security across Honduras, Guatemala and El Salvador ‌as confli...
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Chris Lewis @chrislewis.bsky.social · 25/09/2026
"Making such predictions usually 'involves so many untestable claims that you just end up with a conversation that is really more like faith than something scientific or empirical', says Vermeer. This makes basing any course of action on these conversations difficult, he adds."
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Chris Lewis @chrislewis.bsky.social · 25/09/2026
Leading scientific publications cover AI existential risk with a notably different tone
nature.com
Will AI really kill us all? The science behind the hype
Nature examines whether the technology might spell the end for humans, and why AI companies are calling for a slowdown.
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Reposted by Chris Lewis
Nicholas Grossman @nicholasgrossman.bsky.social · 23/09/2026
Good piece that gets at something that's been nagging at me about what @himself.bsky.social terms "the Machine God metaphor": Buying into it cuts off other types of questions, lines of inquiry, and approaches to knowledge. And I can't help but notice which way of thinking empowers tech companies.
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George Dubya @itisgeorge.bsky.social · 08/09/2026
I support a Manhattan Project-type push because we're gonna need large scale CO2 removal. But imagine the allies deciding in 1940 that they didn't need to fight the Nazis with tanks/troops/etc. because any day now the Manhattan Project would develop an atomic bomb and they could just fight with that
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Chris Lewis @chrislewis.bsky.social · 19/09/2026
Their view is not only "this tech could kill us, but we have to make it anyway..." ...it's "this tech could kill us, but we have to get rich making it anyway."
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Chris Lewis @chrislewis.bsky.social · 17/09/2026
For real. I don't think this is true of Raskin, but it perpetuates the image that it's all a game to them.
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Chris Lewis @chrislewis.bsky.social · 12/09/2026
Am I reading right that there *is* a drying trend, but this study shows that the drying trend is not *accelerating*?
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Chris Lewis @chrislewis.bsky.social · 12/09/2026
The AI doomsday scenarios seem to assume indefinite exponential growth in the tech’s capacity. Do we have any precedent for other technologies behaving like this? Computer chips maybe? Sincere question.
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Chris Lewis @chrislewis.bsky.social · 11/09/2026
Here in Chiquimula, Guatemala, virtually everyone has lost their entire maize crop to El Niño-induced drought. Not good.
toughgrowing.substack.com
The El Niño food crisis has arrived in Central America
Plus this month’s collection of food and climate news and links.
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Chris Lewis @chrislewis.bsky.social · 27/08/2026
Late to this, but: trees that produce food.
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Chris Lewis @chrislewis.bsky.social · 22/08/2026
Just found my vision for my life’s work vividly depicted in a… Chobani ad?
youtube.com
Dear Alice
YouTube video by THE LINE
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Chris Lewis @chrislewis.bsky.social · 22/08/2026
Has anyone written about how this dovetails with the MAHA-style cultural politics of brawny, manly red meat consumption?
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Chris Lewis @chrislewis.bsky.social · 20/08/2026
Absolutely a real-world pokemon
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Chris Lewis @chrislewis.bsky.social · 20/08/2026
Oops
Hops everywhere
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Chris Lewis @chrislewis.bsky.social · 18/08/2026
Great primer on how El Niño works, and what we might expect for the strongest one ever on record over the next year or so.
interactive.carbonbrief.org
Explainer: How the ‘super El Niño’ will reshape the world’s weather
The world is currently experiencing what is expected to become the strongest El Niño on record – dubbed a “super El Niño” by many.
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Chris Lewis @chrislewis.bsky.social · 17/08/2026
Found a bird’s nest tucked in the row of grapes at the farm. Not sure we ultimately want it there long-term, but it’s nice to be able to provide a little bit of habitat for now <3
Bird nest nestled among grapes and grape leaves
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Chris Lewis @chrislewis.bsky.social · 11/08/2026
I'd have to think about it. Tbh it's not really my area and I'm taking trusted actors like the Lancet at face value when they say it's an important concept. But I agree that for the concept to be useful, it would have to pass the test you propose.
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Chris Lewis @chrislewis.bsky.social · 11/08/2026
Granted, it seems to me that many proponents of the UPF concept are not very good about communicating this nuance, so I understand the urge to push back. I just think we might all be more enlightened if we embrace a more gestalt definition of it. /end
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Chris Lewis @chrislewis.bsky.social · 11/08/2026
So perhaps there's no single precise criteria that we can use to include/exclude people from middle class status. And yet I think it's clear that the concept still offers tremendous value for understanding American life. Can the same not also be true for UPF? 5/
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Chris Lewis @chrislewis.bsky.social · 11/08/2026
So it must be income, right? A Pew study a few years ago defined "middle class" as income from $52-156k for a family of three. So then a family making $51k cannot possibly be middle class. But that's also not true! Perfectly plausible to call them middle class based on presence of other factors. 4/
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Chris Lewis @chrislewis.bsky.social · 11/08/2026
Perhaps you're a renter with a college degree and a $70,000 salary. That sounds pretty middle class to me. Okay, so is a college degree the defining trait of "middle class"? Definitely not IMO. Lots of people with other professional backgrounds can fit the bill. 3/
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Chris Lewis @chrislewis.bsky.social · 11/08/2026
Example: the concept of "middle class." You might say that most middle class Americans are homeowners, have some advanced education, and have income that falls within a certain range. But does that mean you *cannot* be "middle class" if you rent your home? I don't think so. 2/
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Chris Lewis @chrislewis.bsky.social · 11/08/2026
These pitfalls are important to point out. But can't UPF still be a useful analytical concept even if it elides precise definition? Can it not still describe a meaningful constellation of traits, even if none of those traits are strictly essential? An example... (cc @michaelhobbes.bsky.social
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Chris Lewis @chrislewis.bsky.social · 08/08/2026
Apples at the farm looking quite nice…
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Chris Lewis @chrislewis.bsky.social · 07/08/2026
en.wikipedia.org/wiki/The_Los... Apparently there's a movie too but somehow I doubt it handles the nuances as well.
en.wikipedia.org
The Lost City of Z (book) - Wikipedia
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Chris Lewis @chrislewis.bsky.social · 07/08/2026
On Amazon cities: highly recommend the "Lost City of Z" book. Scientists used to think that complex civilization in the Amazon was impossible. (Clear racist undertones to this idea.) 100 years ago, a British explorer was convinced otherwise and went missing in the Amazon looking for evidence...
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Chris Lewis @chrislewis.bsky.social · 06/08/2026
Yah, "too expensive" could mean "literally unaffordable" or also "more of a hardship than it should be." Why is that so bad?
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Chris Lewis @chrislewis.bsky.social · 04/08/2026
Cincinnati has released a plan for how the city will prepare for climate migrants. Denser housing, more public transit, fewer fossil fuels… www.nytimes.com/2026/07/30/c...
nytimes.com
A City With a Plan
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Chris Lewis @chrislewis.bsky.social · 02/08/2026
Does that include the eggs??
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Chris Lewis @chrislewis.bsky.social · 02/08/2026
Backyard grapes are coming along...
Ripening purple and green grapes hanging from our back deck railing
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Chris Lewis @chrislewis.bsky.social · 01/08/2026
I don't think the sass was necessary here but cool, thanks!
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Chris Lewis @chrislewis.bsky.social · 31/07/2026
Which Dems have openly said this? (Sincere question, I haven't noticed it.)
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Chris Lewis @chrislewis.bsky.social · 31/07/2026
It's interesting that the cost of a healthy diet has increased, but also that more people are now able to afford it
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Chris Lewis @chrislewis.bsky.social · 22/07/2026
Went to the source study and found another stat even more jarring: "Cumulative excess deaths from smoke PM2.5 [in the US] could reach 1.9 million between 2026 and 2055."
nature.com
Wildfire smoke exposure and mortality burden in the USA under climate change - Nature
Smoke PM2.5 could result in 71,420 excess deaths per year&nbsp;in the USA by 2050 under the SSP3-7.0 high-warming scenario.
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Chris Lewis @chrislewis.bsky.social · 20/07/2026
The study estimates that more than 10% of opioid overdose deaths occurred because of floods. Proximate causes like loss of job, loss of home, inability to access care.
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Chris Lewis @chrislewis.bsky.social · 19/07/2026
...it seems like a fitting symbol of this early era of climate change. We are fortunate, and we are still having a relaxing time—reading, cooking, watching soccer, and spying animals out the windows. But it is a different experience than it would have been a decade ago.
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Chris Lewis @chrislewis.bsky.social · 19/07/2026
A while ago we booked ourselves a getaway for this weekend at a cottage in rural Wisconsin. We envisioned lots of hiking and sun. Instead, we’re largely cooped up inside because of heat and smoke...
Green Wisconsin forest in wildfire haze.
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Chris Lewis @chrislewis.bsky.social · 18/07/2026
Source: heatmap.news/daily/worryi...
heatmap.news
What Worries Me Most About This Wildfire Smoke
We didn’t know days like this could happen. Then we learned how bad they really are.
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Chris Lewis @chrislewis.bsky.social · 18/07/2026
@robinsonmeyer.bsky.social really nails it here. Quite possible that the worst impacts of climate change will be the curveballs we didn't anticipate.
To summarize, wildfire smoke did not appear in our economic simulations of climate change. As recently as a few years ago, we did not really know that days like today — or June 7, 2023; or September 15, 2020; or September 9, 2020 — could occur. Then they happened. And happened again. And then we studied them and discovered that, in fact, they may be more expensive for the U.S. economy than we once thought climate change itself would be.

That worries me. Now we know these smoke-out days can happen; now they are fast becoming a rare but predictable feature of summer life. But until recently they were unimaginable. What other ignominies, what other tail risks and airborne surprises, are lurking in the uncontrolled experiment we’re running on the biosphere? What else — unforecast, unmodeled, unstudied, unthought of — lies ahead? After 10 years of covering the climate system, I am not someone who lies sleepless fretting about atmospheric CO2. But I do wonder what else we don’t know enough about to ask.
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Reposted by Chris Lewis
Dr. Jeff Masters @drjeffmasters.bsky.social · 16/07/2026
Even running a HEPA unit indoors when the AQI is in the Hazardous range outside may not improve your indoor AQI to the "Good" range. My colleague @wisconsam.bsky.social improved their AQI from Purple (borderline Very Unhealthy) to Orange (Unhealthy for Sensitive Groups) by running HEPA in the room.
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Chris Lewis @chrislewis.bsky.social · 16/07/2026
Today I learned: all citrus fruits are believed to be descended from mandarin, pomelo, citron, and papeda (native to Asia with a fruit that looks like limes).
hort.extension.wisc.edu
Indoor Citrus
Even though we can’t grow oranges and grapefruits outdoors in the Midwest, it is possible to keep a citrus tree as a houseplant. Learn about the history of citrus and growing them as houseplants here...
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Chris Lewis @chrislewis.bsky.social · 15/07/2026
A hedge fund thinks that markets are underestimating El Niño risks to food supply. They’re planning to invest $500 million in impacted markets and crops. www.moneycontrol.com/news/busines...
moneycontrol.com
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Chris Lewis @chrislewis.bsky.social · 14/07/2026
A reminder based on some recent @projectdrawdown.bsky.social research that, even on a hotter planet, we can still produce more than enough food for everybody.
toughgrowing.substack.com
We have enough food for everybody
And that’s not likely to change anytime soon. Plus: this month’s collection of food and climate news and links.
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