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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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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
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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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 · 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 · 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
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 · 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
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 · 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
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
@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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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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Chris Lewis @chrislewis.bsky.social · 28/06/2026
We typically try to understand climate impacts on food systems by modeling how corn grows under higher temperatures. We don't usually consider the effects of, say, heatwaves breaking grocery store fridges. Virtually impossible to anticipate all of warming's second-order effects.
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Chris Lewis @chrislewis.bsky.social · 08/06/2026
Where will global food systems be after a year at 1.6C of warming? My gut take on the range of possibilities:
substack.com
Get ready for a taste of 2035
How will the global food system fare under 1.6°C of warming?
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Albert Pinto @70sbachchan.bsky.social · 03/06/2026
SLOW CLAP "AI boom means US is now ‘investing more’ in fossil-fuel power than China" Congratulations to US AI Tech Oligarchs www.carbonbrief.org/ai-boom-mean...
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Chris Lewis @chrislewis.bsky.social · 18/05/2026
Useful chart
Chart of 2012 calorie and protein consumption by region and food source.
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Chris Lewis @chrislewis.bsky.social · 18/05/2026
Rhubarb season
Stalks of rhubarb on a kitchen counter
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David Roberts @volts.wtf · 15/05/2026
Another for instance! Down in Queensland, Australia, fossil gas used to provide all the peak power. Then batteries start nibbling at it. Then chomping on it. And now they've basically eaten it all up. No more gas. Look at this graphic! Glorious. reneweconomy.com.au/big-batterie...
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Chris Lewis @chrislewis.bsky.social · 15/05/2026
Easy to miss here that the chart is *annual additions* and not the cumulative total
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Chris Lewis @chrislewis.bsky.social · 14/05/2026
Regardless of the question, the answer is often "eat less meat, grow fewer biofuels"
theconversation.com
How the world can avoid millions going hungry when supply chains collapse
The world is too dependent on the Gulf states for energy and fertiliser.
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Chris Lewis @chrislewis.bsky.social · 14/05/2026
Sounds like polycrisis, does it not @70sbachchan.bsky.social @katemac.bsky.social?
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Dr. Jeff Masters @drjeffmasters.bsky.social · 14/05/2026
Two of the deadliest weather-related disasters globally in the 21st century have been droughts in Somalia. The current drought may join this list: "Somalia’s worst-ever drought leaves millions starving as Trump’s aid cuts and Iran war deepen hunger crisis" www.independent.co.uk/news/world/a...
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Chris Lewis @chrislewis.bsky.social · 04/05/2026
Can we wean off global fertilizer supply chains? According to one study, we could produce almost all the ammonia fertilizer we need on farms--with renewable energy--by 2030. Ft. @dwallacewells.bsky.social @ifpri.org @70sbachchan.bsky.social @tracyalloway.bsky.social
toughgrowing.substack.com
April roundup: The Hormuz fertilizer crisis
This month's food and climate grab bag, featuring: the "wild grid," (nearly) terrestrial intelligence, spring planting, and more.
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Chris Lewis @chrislewis.bsky.social · 03/05/2026
Meat consumption in China has skyrocketed, underpinned by imported American and Brazilian soybeans for animal feed. How would the global food system change if China were to wean off its dependence on imports?
adamtooze.substack.com
Chartbook 445: Is a "China shock" coming for the "big ag" food regime?
China’s integration into the world economy is the most dramatic development of modern economic history.
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Chris Lewis @chrislewis.bsky.social · 29/04/2026
I would not have guessed that we didn't reach racial parity in voter registration until *2010*
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Chris Lewis @chrislewis.bsky.social · 28/04/2026
I've said it before. But I continue to be amazed that the American medical system makes it impossible for doctors to answer the question "how much will this cost?"
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Chris Lewis @chrislewis.bsky.social · 26/04/2026
And with the other half, we could feed 7.2 billion people...
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Chris Lewis @chrislewis.bsky.social · 26/04/2026
Only half of all farmed calories are available for human consumption.
drawdown.org
Only half of calories produced on croplands are available for human consumption, study finds
Study: 1/2 of the calories produced on croplands are unavailable for human consumption
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Richard Waite @waiterich.bsky.social · 25/04/2026
Looks like a fun event Let’s be careful not to shift burdens to individuals - change the system! I’d say: 1) vote 2) join an org working on env issues 3) the energy-focused personal actions are well covered For food, 4) minimize food waste 5) eat more plants/less meat and especially less beef
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Chris Lewis @chrislewis.bsky.social · 23/04/2026
"During the past two decades, Gulf monarchies such as Saudi Arabia, Qatar and the United Arab Emirates have come to occupy a far more central place in the global food economy than is often recognised." www.ft.com/content/3634...
ft.com
The coming global food crisis
Hunger and even famine are foreseeable consequences of the war on Iran. Now the world must act to shield the poorest from effects that will continue long after the fighting stops
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NBER @nber.org · 16/04/2026
When the expanded CTC expired in 2022, each $1,000 in lost benefits reduced consumer sentiment by 1.7 points—with effects lasting nearly two years—long after the checks stopped, from @jacobbastian.bsky.social and Melody Harvey www.nber.org/papers/w35059
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James Temple @jtemple.bsky.social · 15/04/2026
Folks who argue that AI is pointless or useless aren't being particularly fair-minded or really engaging with the reality. But ... companies sure are making it easy to think that.
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