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Ariel Ortiz-Bobea

@arielob.bsky.social
11K followers 537 following 287 posts

Applied econ & policy prof at Cornell. Researching how people cope w/ environmental change. Posts about climate, agriculture, environment & academia. arielortizbobea.github.io

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Reposted by Ariel Ortiz-Bobea
John Cawley @johncawley.bsky.social · 30/09/2026
From our AEA cttee on the job market, here's the first update on the status of the job mkt for PhD economists of the 2026-27 cycle. A thread with graphs follows... #EconJobMarket #EconSky @aeainformation.bsky.social @aeacswep.bsky.social @joelistings.bsky.social 1/9
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Ariel Ortiz-Bobea @arielob.bsky.social · 30/09/2026
Starting to have friends and family ask how I feel about the alleged gang rape at Cornell as a faculty member. We'd like to believe our opinion does not matter, but it does enough to some that I'm compelled to share my views. Well, I'm pretty horrified. I'm sure I'm not the only one. A short thread.
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David Ho @davidho.bsky.social · 23/09/2026
Wtaf is this question my university just asked me about my project?
Does the project involve any work that could be interpreted as promoting DEIA, climate change research, or non-compliant to any Presidential Executive Orders?
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Bob Kopp @bobkopp.net · 22/09/2026
NEW PAPER: In a new paper, jointly published in @agu.org Earth's Future & @ametsoc.org BAMS, and co-led by Melissa Kenney, @costasamaras.com and me, 175 authors outline priorities to guide the future of scientific assessments of climate change in the United States. 🧵
doi.org
Research Priorities for Robust Climate Assessments in the United States
A network of climate assessments plays a critical role in synthesizing the state of science to support evidence-based decision-making To support future U.S. and sub-national climate assessments, ...
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Costa Samaras @costasamaras.com · 22/09/2026
Communities can't wait for the next National Climate Assessment to understand their climate risk. With leadership by Melissa Kenney, @bobkopp.net & I were lucky to work with 175 climate researchers to outline assessment priorities that folks can work on now: headlines.ametsoc.org/2026/09/22/f...
headlines.ametsoc.org
First Paper Published in the U.S. Climate Collection
The U.S. Climate Collection has published its first paper, with 175 authors outlining research priorities for future U.S.-focused climate assessments.
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Ariel Ortiz-Bobea @arielob.bsky.social · 22/06/2026
1/ We have a new paper out showing that accounting for quality more than doubles the estimated heat damages on US dairy production. Story: news.cornell.edu/stories/2026... Paper: iopscience.iop.org/article/10.1... Code: doi.org/10.6077/COSA8S
news.cornell.edu
‘Double the damage’: Warming climate reduces milk quality and quantity | Cornell Chronicle
Heat stress on dairy cows not only decreases the amount of milk produced but also the fat and protein content, doubling the economic losses.
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Ariel Ortiz-Bobea @arielob.bsky.social · 21/05/2026
I wonder what editors of econ journals are seeing in terms of changes in the volume of submissions. As a reviewer I'm experiencing what feels like a doubling of reviewing requests. I'm not tracking my declines yet but will probably start soon.
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Ariel Ortiz-Bobea @arielob.bsky.social · 12/02/2026
Please share with potential solid candidates for this postdoc (academicjobsonline.org/ajo/jobs/31576). We start reviewing application next week! A data-savvy economist or data scientist with interest in agriculture and environment would be a good fit.
academicjobsonline.org
Cornell University, College of Business
Job #AJO31576, Postdoctoral Associate, Cornell University, College of Business, Cornell University, Ithaca, New York, US
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Ariel Ortiz-Bobea @arielob.bsky.social · 16/01/2026
1/ Lots going on these days, but I'm nonetheless happy to share a paper out today in Science Advances together with Simone Pieralli (European Commission Joint Research Centre) titled "Unpacking the growth of global agricultural greenhouse gas emissions". news.cornell.edu/stories/2026...
news.cornell.edu
More productive farming lowers global emissions | Cornell Chronicle
A new analysis shows that improved farm productivity has been the driving force in keeping global greenhouse gas emissions from agriculture in check, with implications for how countries support farmer...
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Ariel Ortiz-Bobea @arielob.bsky.social · 14/01/2026
A little bit late, but I'm looking to hire a postdoc at Cornell to measure the private value of soil health improvements in US ag. A 2-year gig. Well suited for an ag/resource economist or data scientist w/ interests in soil health and solid programming & econometric chops. ad coming soon!
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Ariel Ortiz-Bobea @arielob.bsky.social · 02/12/2025
Interesting. Is this the first time the AEA bans a member for life?
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Ariel Ortiz-Bobea @arielob.bsky.social · 01/12/2025
Proper use of a bar chart
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Richard Nerland @richardnerland.bsky.social · 27/11/2025
I'm excited, the RCT suggests Malengo increases psychological well‑being by about 0.36 standard deviations. As a reference point, this is similar in magnitude to the improvements after vision-restoring cataract surgery. This is not obvious a priori!
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Johannes Haushofer @johanneshaushofer.com · 27/11/2025
Exciting news on @malengo.org, the NGO that helps East African students move to Europe for education: Our research team has given us a glimpse of their early findings! Here is the full writeup, joint with @richardnerland.bsky.social: forum.effectivealtruism.org/posts/CpZYHk... Thread follows!
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Ariel Ortiz-Bobea @arielob.bsky.social · 25/11/2025
We're going through the second 100-year shock to the academic job market in the past 5 years
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Paul Goldsmith-Pinkham @paulgp.com · 24/11/2025
Update on the state of the job market courtesy of a nudge by @gottliebecon.bsky.social It's bad! paulgp.com/2025/11/24/j...
paulgp.com
Economics Job Market Update: November 2025 - A Historic Low
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JAERE @jaereaere.bsky.social · 13/11/2025
📢 Just accepted in #JAERE 📢 is now posted at @aereorg.bsky.social! 📍 Follow @aereorg.bsky.social to stay updated on all things REEP and JAERE. #EconSky 📈📉
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Justin Wolfers @justinwolfers.bsky.social · 22/09/2025
Serious scholars have examined what happens when we change the number of H1-B visas issued. Cities that get more H1-B immigrants subsequently see the wages of natives *rise* substantially. Skilled immigrants bring new ideas, fill labor shortages and make us all more productive.
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Tatyana Deryugina @tderyugina.bsky.social · 11/09/2025
Hey, #EconSky! Got a policy-relevant paper that you want folks in DC to see? Present & publish it with NBER's Environmental and Energy Policy and the Economy. Submission deadline is Oct 20. Conference is in DC on May 21, 2026. More details below. conference.nber.org/confsubmit/b...
conference.nber.org
Submission: 8th Annual NBER Environmental and Energy Policy and the Economy Conference, Page 1 of 2 - MyNBER
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Ariel Ortiz-Bobea @arielob.bsky.social · 01/09/2025
First time seeing people out protesting against the government and congress in Watkins Glen, NY
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Ariel Ortiz-Bobea @arielob.bsky.social · 28/08/2025
Just added my signature to the letter. This is a no brainer. It’s wild we’re having a conversation about US central bank independence in 2025. But here we are. Please read and consider adding your signature.
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SIEPR @siepr.bsky.social · 01/08/2025
tinyurl.com/54237ctx
tinyurl.com
Opinion | Trump Wants You to Believe Climate Change Isn’t Dangerous
A Trump administration proposal runs counter to both basic logic and a growing mountain of science documenting direct harms from climate change.
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Ariel Ortiz-Bobea @arielob.bsky.social · 01/08/2025
Are there lawyers out there who have written about the most effective way to submit comments to government reports like the recent DOE one?
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Nathan Richardson @nathanrichardson.bsky.social · 23/07/2025
I have written about this before, when it was suggested as a possibility shortly after the inauguration. A quick summary here--in short, there's little clever or thoughtful about it, though there is some legal strategy at work, however cynical. 1/n www.nytimes.com/2025/07/22/c...
nytimes.com
E.P.A. Is Said to Draft a Plan to End Its Ability to Fight Climate Change
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Ahmad Lashkaripour @lashkaripour.bsky.social · 09/07/2025
Our paper is officially out 🎉 We argue that climate clubs show promise: - A climate club with coordinated penalties could curb 68% of excess emissions from free-riding -Unilateral carbon tariffs? Not nearly as effective
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Jennifer Doleac @jenniferdoleac.bsky.social · 23/06/2025
I'd love to fund studies of interventions that reduce real-time pollution exposure, in the US, on outcomes related to violence and criminal behavior. (There is strong evidence that such exposure increases violence in real time; the next question is how much interventions can mitigate this effect.)
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Ariel Ortiz-Bobea @arielob.bsky.social · 29/05/2025
Telling prospective PhD students that they should not worry about stating their research interests on their statement was not in my bingo card for 2025.
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Catherine Rampell @crampell.bsky.social · 22/05/2025
Trump Has Cut Science Funding to Its Lowest Level in Decades www.nytimes.com/interactive/...
nytimes.com
Trump Has Cut Science Funding to Its Lowest Level in Decades
The lag in funding extends far beyond D.E.I. initiatives, affecting almost every area of science: chemistry, computing, engineering, materials and more.
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Erik Hoffner @erikhoffner.bsky.social · 14/05/2025
Who, us, delete #climate info? USDA has agreed to restore climate change-related webpages to its websites after it was sued over their deletions by the Northeast Organic Farming Association of NY and others, @melinawalling.bsky.social reports:
apnews.com
Facing lawsuit, USDA says it will restore climate change-related webpages
The U.S. Department of Agriculture has agreed to restore webpages related to climate change after it was sued earlier this year over the deletions.
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Ariel Ortiz-Bobea @arielob.bsky.social · 29/04/2025
We received the dismissal emails yesterday. This report is congressionally mandated and aims to inform the US people about the impacts of climate change on the nation and what to do about it.
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Beth Popp Berman @epopppp.bsky.social · 19/04/2025
Federally funded R&D (not all of which is spent at universities) as a fraction of GDP is as low as it's been since we started tracking. Which is a different way of looking at it than "line go up." 4/x ncses.nsf.gov/pubs/nsf2332...
Line graph of the ratio of US R&D spending from various sources to GDP, 1953-2021. The federal percent ranges from about 0.6% of GDP to 1.8%, with the peak in the 1960s, and the low point at the very beginning and over the last 20 years.
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Beth Popp Berman @epopppp.bsky.social · 19/04/2025
There are so many ways one could provide context for this data. For example, in the last five years universities have received 52-55% of their research funding from the federal government. That's the lowest percentage since the 1950s. 1/x ncses.nsf.gov/surveys/high...
nytimes.com
How Universities Became So Dependent on the Federal Government
For decades, universities got billions in federal dollars for research. The relationship was mutually beneficial, until President Trump decided it wasn’t.
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Ariel Ortiz-Bobea @arielob.bsky.social · 19/04/2025
Opinions are not facts. E.g. Someone claiming vaccines don’t work, does not make it true. This distinction is more important than ever.
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Larry Glickman @larryglickman.bsky.social · 19/04/2025
This framing is nuts, and the assumption is that public funding for a public good is somehow untoward and illicit. “The schools took the money” and became “warily beholden to the whims of politicians in Washington.”/1 www.nytimes.com/2025/04/18/u...
nytimes.com
How Universities Became So Dependent on the Federal Government
For decades, universities got billions in federal dollars for research. The relationship was mutually beneficial, until President Trump decided it wasn’t.
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Ariel Ortiz-Bobea @arielob.bsky.social · 19/04/2025
Disappointing ragebaiting from @nytimes.com E.g. “The relationship was mutually beneficial, until President Trump decided it wasn’t.” Trump can CLAIM public research grants don’t benefit the public. He does not DECIDE this. Where is the rigor? www.nytimes.com/2025/04/18/u...
nytimes.com
How Universities Became So Dependent on the Federal Government
For decades, universities got billions in federal dollars for research. The relationship was mutually beneficial, until President Trump decided it wasn’t.
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Clément de Chaisemartin @cdechaisemartin.bsky.social · 18/04/2025
Just posted updated version of our DID textbook! We now have drafts of all chapters, including the one on general designs! Now you can tell your friends still on X that they are DID-outdated :-) Happy easter for those of you that celebrate it. papers.ssrn.com/sol3/papers....
papers.ssrn.com
Credible Answers to Hard Questions: Differences-in-Differences for Natural Experiments
This book introduces applied researchers to modern Differences-in-Differences (DID) methods, that they can use to obtain credible answers to hard causal inferen
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Maya Sen @mayasen.bsky.social · 18/04/2025
Ok so yeah, this has quickly become the #1 misunderstanding about the canceled grants the grants are not “subsidies” or “entitlements” to Harvard or Princeton or whatever they aren’t going into universities’ endowments they are competitive contracts won by these universities to do research
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Ariel Ortiz-Bobea @arielob.bsky.social · 16/04/2025
I hope it doesn’t stop at redesigning websites & that other schools follow to defend their academic mission. Academia cannot afford to have pundits and politicians define what they are to the general public. Universities have to be proactive and tell their own story. No middle men.
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Ariel Ortiz-Bobea @arielob.bsky.social · 11/04/2025
still time to join!
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Paul Voosen @voosen.me · 11/04/2025
BREAKING from @science.org: The Trump admin is seeking to kill nearly all climate research at NOAA, its climate science agency. Its near-final budget proposal would end all NOAA research labs, academic institutes, and regional climate centers. And it wants to fully end the NOAA Research division.
science.org
Trump seeks to end climate research at premier U.S. climate agency
White House aims to end NOAA’s research office; NASA also targeted
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AERE @aereorg.bsky.social · 08/04/2025
AERE@OSWEET returns *this Friday* April 11th at 2pm Eastern (11am Pacific) with 3 terrific talks on politics, media, & the environment! Presenters: ✨ Prashant Garg (@prashantgarg.bsky.social)  ✨ Rosanne Logeart (@rosannelogeart.bsky.social)  ✨ Hannah Farkas Register: buff.ly/JhWGo59 #EconSky 📉 📈
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Ariel Ortiz-Bobea @arielob.bsky.social · 05/04/2025
Just drove by ~150 protesters holding signs under the cold rain, at a rural intersection in the NY finger lakes… hours away from any city (including Ithaca). Never seen this before.
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Richard Waite @waiterich.bsky.social · 01/04/2025
The US needs more publicly funded agriculture research & development to offset the effects of climate change. But instead the US has been investing less. Cutting agriculture R&D spending will dampen productivity at home & abroad while raising food prices. New paper by @arielob.bsky.social et al.
apnews.com
Scientists shielding farming from climate change need more public funding. But they're getting less
Public funding for agricultural research in the U.S. has been declining for the last two decades, a process Trump has rapidly accelerated by freezing or pausing support for a variety of research progr...
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Grist @grist.org · 25/03/2025
Farmers are reeling from Trump’s attacks on agricultural research A "rollercoaster" of funding cuts and layoffs have gutted critical agricultural research projects across the nation. grist.org/food-and-agr... #Farmers #Farms #agriculture #food #trump
A single farmer is in a green house water seeds in soil. The farmer has a white hat in and brown pants. The green house is full of seed trays.
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Prof. Bob Howarth @profbobhowarth.bsky.social · 14/03/2025
Just heard that Trump is putting an end to atmospheric monitoring site NY67 that is run out of my lab. This is one of the oldest NADP sites in the US, continually measuring acid rain and other pollutants since 1977. Closing it down is tragic.
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Ariel Ortiz-Bobea @arielob.bsky.social · 12/03/2025
1/ We have a paper out in @pnas.org with @yurouhe.bsky.social, Bob Chambers (Maryland) & David Lobell (Stanford FSE) where we quantify the public R&D investment required to offset the emerging climate-induced slowdown of US agricultural productivity. paper: www.pnas.org/doi/10.1073/... (open)
pnas.org
Large increases in public R&D investment are needed to avoid declines of US agricultural productivity | PNAS
Increasing agricultural productivity is a gradual process with significant time lags between research and development (R&D) investment and the resu...
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Ariel Ortiz-Bobea @arielob.bsky.social · 28/02/2025
Once in a while I think back to my high school history teacher who told us: Rights are not given to you You take them
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Ariel Ortiz-Bobea @arielob.bsky.social · 25/02/2025
Econ papers are long & have converged to a "stacking-dolls" model where shorter versions of the paper are "stacked into" the full version of the paper. Title is the 8-10 word version Abstract 100-150w Intro 1.5-2k w Paper 10-15k w Why is this efficient? How does that influences writing? 1/
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Zoë Plakias @zoeconomy.bsky.social · 21/02/2025
For those unaware, I would argue this is one of the most important pipeline programs supporting Black students in the US to enter the agricultural and applied economics profession.
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Yana van der Meulen Rodgers @yanarodgers.bsky.social · 17/02/2025
The Federal Reserve is not as independent from the executive branch as we’d like to think. The NY Fed just cancelled this Thursday’s @aeacswep.bsky.social reception at #EEA2025 and withdrew from our summer fellowship program. Both support women and underrepresented groups in economics. #EconSky
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