Happy Fiestas Patrias and Independence Day to Chile -- which issued the first ever sovereign sustainability-linked bonds (March 2022). These ideas can be valuable at COP30 or beyond. americas.societegenerale.com/en/news-nort...

Today is a beautiful date for honoring Pythagoras (and the simplest proof of his theorem)

On the "economics" of it, of course...

Det er for tidlig å konkludere at venstresiden vant valget. Når (/om) både Sp og MDG innser at de kan vippe regjeringen, er det høyresiden som vinner: Siden Sp og MDG ønsker motsatt politikk på noen områder, vil høyresiden kunne "kjøpe" en av dem, uansett hvilken platform Ap ender opp med å tilby.

Happy Independence Day to what can become the most important country this Fall... cop30.br/en

What's the future of carbon pricing? To answer, one must understand political economics. More than 800 scholars have realized this and signed up for the 9/9 Webinar by @eaere.bsky.social on this exact topic. You can still do it: www.eaere.org/events/suppo...

Nå tilgjengelig opptak av @kholtsmark.bsky.social mm: www.klimastiftelsen.no/arrangement/...

My recommendations for how to improve tropical forest conservation financing (for the upcoming COP30 meeting): www.belfercenter.org/research-ana...

To conserve forests, @cop30brazil.bsky.social proposes TFFF. TFFF has severe weaknesses but can, fortunately, be modified if payments are forest-linked loans rather than grants -- among other things discussed in this Policy Brief: drive.google.com/file/d/1B4sW...

Indeed: - if this destructive bill becomes law – just weeks ahead of Cop30 in Belém – it threatens to erode Brazil’s credibility on the global stage. www.theguardian.com/world/2025/a...

Beautiful -- but this is a Norwegian pic of climate change. Melting glaciers bring particles that color lakes green.

Why is it not only sad and ironic, but also indicative of extremely poor Brazilian judgement to select Belém as the location for COP30? 🧵 www.bbc.com/news/article...

I’ll modestly suggest my own book ‘Resources Matter: ending poverty while protecting nature’ (OUP). The PDF is free to download (open access) 👇 global.oup.com/academic/pro...

Forskningspublikasjonen "The Gas Trap", med @kholtsmark.bsky.social, byr på et par anbefalinger for norsk energipolitikk: www.dn.no/kronikk/det-...

The Gas Trap FT OpEd - paper version (based on the forthcoming JPE with @kholtsmark.bsky.social )

Today in @financialtimes.com: OpEd on how it is tempting to let gas outcompete coal, but why the long-term consequence is less renewables and more emissions + policy implications for Europe based on: The Gas Trap, with @kholtsmark.bsky.social, forthcoming in JPE. www.ft.com/content/e969...

"The Gas Trap" paper, with @kholtsmark.bsky.social, is accepted in JPE! GSB Insights @stanford.edu wrote an article about it: www.gsb.stanford.edu/insights/rus...

"Folks out there who are waiting to inherit at least $30 million, today is a good day for you! Collectively, you will receive approximately $211 billion in tax breaks." Sanders said sarcastically. "For the top two-tenths of one percent: Congratulations, you hit the jackpot.” https://trib.al/misUweA

Open letter from @sierraclub.org @lcv.org and others: "We Won't Pay for Big Tech's Power Needs" www.sierraclub.org/press-releas...

NEW: I analyzed nearly 300 federal cases involving the Trump administration. Federal judges—across the political spectrum—are using language I’ve never seen before. One called government actions “unconscionable.” Another quoted Kafka. They’re begging us to pay attention.

Thanks! It started by chatting with Anke 15y ago (!) on how governments may negotiate treaties not because of spillovers, but to tie hands of future governments => (a) coalitions can be larger (b) we provide a unique theory of "conventions" (c) the Paris Agreement won't unravel even if US withdraws🙂

Now that we don't want colleges to do science anymore, the courts have cleared the way for them to concentrate on sports. marketdesigner.blogspot.com/2025/06/coll...

Today, it's 120 years since the Norwegian parliament unanimously declared independence from Sweden: The government had resigned and when the Swedish King was unable to find a new one, the parliament "fired" him for being unable to do his duties as a Norwegian King. en.wikipedia.org/wiki/Dissolu...

www.theguardian.com/environment/... Starting in August 2024, an unprecedented heatwave has swept across Western Australia’s reefs, turning corals white from the World Heritage-listed Ningaloo all the way to Ashmore Reef, about 1,500km north-east.

Recently accepted to #REStud, "Pareto Improvements in the Contest for College Admissions," from Krishna, Lychagin, Olszewski, Siegel, and Tergiman: www.restud.com/pareto-impro... #EconSky #CollegeAdmissions #Contests

No cookie awarded for correctly guessing that Harvard's long-term reputation will be boosted thanks to Trump www.washingtonpost.com/education/20...

Just admitted to our political economy students that our rational choice and utility maximizing models have little explanatory power these days.

My pleasure! Thank you, @araujocrrafael.bsky.social, @franciscocosta.bsky.social, and Sant'Anna, for responding carefully, and ConGrat with an important publication ‪@reveconstudies.bsky.social

"Strong institutions provide comparative advantage in clean industries, and so improve a country’s environmental quality." Recent paper from @joseph-s-shapiro.bsky.social: www.restud.com/institutions... @nber.org #econsky #REStud

"We document the workings of a detected cartel that adopted a protocol of keeping winning bids secret from designated losers. We show how such protocols can raise cartel profits." New paper from Kawai, Nakabayashi and Ortner: www.restud.com/wp-content/u... #EconSky, #REStud #collusion, #privacy

Recently accepted to #REStud, "‘Bad’ Oil, ‘Worse’ Oil and Carbon Misallocation," from Coulomb, Henriet and Reitzmann: www.restud.com/bad-oil-wors... #EconSky

"This study estimates the carbon-efficient forest cover in the Brazilian Amazon. A $10/ton carbon tax could preserve 95% of the efficient carbon stock, avoiding 42B tons of CO2 & yielding $1.6T in welfare gains." From @araujocrrafael.bsky.social , @franciscocosta.bsky.social & Sant'Anna #EconSky 👇

How reduce the opposition to renewables? Wu @stanford.edu proposes "land-sparing and low-conflict strategies" including "the dual use of land for solar energy production and agriculture, and the co-location of onshore wind and solar PV projects": events.stanford.edu/event/stanfo...

Not discussed in this article is the fact (Haya has written on this issue) that the forest offsets program, where it is used in California and other western states, makes the wildfire problem worst by creating binding contractual barriers to doing fuel treatments including prescribed fire.

75 Y - and more important than ever before! www.consilium.europa.eu/en/schuman-d...

Rather than using a favorite tool on whatever passing by, @s-stantcheva.bsky.social "brings a rare mix of rigorous theory, superb data, and empirical methods" to deepen our understanding of public economics. That's impressive and shows commitment. Congratulations! www.aeaweb.org/about-aea/ho...

A devastating, heartbreaking piece on the impact of Trump's catastrophic cuts to USAID in Sudan. “This is the darkest hour for Sudan,” said Jan Egeland, head of the aid agency Norwegian Refugee Council, who described the cuts as a “moral failure.”

Costa Rica has massively rewilded over recent decades. Has this led to the collapse of farming, rural society, or national wellbeing? Totally the opposite, and we in Ireland have SO much to learn from their example. My piece for the @irishexaminer.bsky.social www.irishexaminer.com/lifestyle/ou...

Trump administration to investigate states with strict climate laws www.bostonglobe.com/2025/04/11/s... via @BostonGlobe

After being an editor for 6.5 years (4 REStud; 2.5 JEEA), I have accumulated a few suggestions that can help you avoid unnecessary rejections.

Thanks a lot to all authors and referees! I have completed my term at REStud (I'll write a few suggestions in my next post), and I'm thrilled to be replaced by brilliant @jaksteiner.bsky.social www.restud.com/new-joint-ma...

Hawaii has ambitious sustainable energy targets. Which is yet another reason for why giving a talk here on that topic is delightful. uhero.hawaii.edu/workshop-on-...

Open letter by 700+ Jewish faculty in US on Trump's Columbia funding cuts, supposedly against antisemitism: "Not on our behalf. Harming US Universities does not protect Jewish people. Cutting funding for research does not protect Jewish people. Punishing researchers does not protect Jewish people."

$700 billion in tariff revenue would put the US between 🇸🇳 Senegal and 🇲🇳 Mongolia on this chart. Present-day Americans are 17.3 times more affluent than the residents of Senegal

Both US and EU are now claiming to introduce reciprocal tariffs. If the two are based on just slightly favorable interpretations, the outcome is a tariff war that continues to escalate to autarky.

A few more of these trips, where I depart one date and arrives the date before, and Obama is back in power

Nei, forbransjen må hverken "få mer strøm" eller "løftes frem i kraftkøen" slik det konkuderes med her. Strøm fordeles mest fornuftig i markedet ved bruk av prismekanismen. www.dn.no/innlegg/laks...

It was wonderful to give the Goldstein lecture @umn-econ.bsky.social on "the economics of doing nothing". They have even made the presentation and the subsequent discussion available to everyone: www.youtube.com/watch?v=q2Xv...

Det er svært fristende å skrive en norsk kronikk som kritiserer regjeringens strømstøtte. Men så kom jeg på at jeg har gjort det allerede... www.dn.no/fredagskroni...