Very happy to share this thoroughly revised version of our climate institutions working paper -- always a joy to work with @claudiazwar.bsky.social and @chflachsland.bsky.social. Thank you to everyone who provided feedback on the previous version!
osf.io/preprints/so...
𝗔𝗿𝗶𝗮𝗱𝗻𝗲 𝗶𝗻𝘀𝗶𝗱𝗲 👀
Bei der #Ariadne-Interviewreihe 2025 haben wir eine Menge über die Arbeitspakete gelernt. Die #statements der Forschenden zur Energiewende nehmen wir mit ins neue Jahr! 🎙️
@nworbmot.bsky.social @mkalkuhl.bsky.social @chflachsland.bsky.social @falkoueckerdt.bsky.social
potsdam.pi-asp.de/bewerber-web/?xsrf=8A7EDA763340E1F39D4664EC5F04C1C7&company=PIK-FIRMA-ID&tenant=&lang=E&jobdesign=#position,id=b991f59f-bef7-4bf6-925c-f61cd2310a56,popup=y
🚨Job Alert 🚨
Interested in working with us @pik-potsdam.bsky.social (Berlin based RD5, formerly MCC)? We are looking for a new #PhD student in my team, working on #policyevaluation, #politicaleconomy and #development.
3 years funded. Focus on research. No teaching obligations.
More information 👇
Activism and the Electoral Participation of Women Mona Morgan-Collins and Valeria Rueda Abstract Can political activism foster electoral participation? We investigate this question by examining the role of the British suffragists in fostering women’s electoral participation. While scholars have shown that women politicians increase women’s participation in politics, less attention has been paid to the role of activists. We fill this gap by studying the 1913 Pilgrimage, a large-scale nationwide march in support of women’s parliamentary suffrage. Using a novel database of geocoded electoral registers, we employ a differences-in-differences strategy to show that proximity to the Pilgrimage increased women’s registration in local elections. To explain this effect, we show that exposure to women activists spurred other women’s political mobilization, and that our results are not driven by an endogenous selection of the march path and cannot be attributed to mobilization by other movements or politicians. Our findings highlight that women’s activism can drive political participation even in the virtual absence of women politicians.
Figure 2. Map of the march and data availability at the division level. Note: March path in sampled counties is along main roads connecting stopping points and along straight lines outside the sample (see Appendix Figure C.1 for stopping points).
Figure 3. The effects of the march using different treatment definitions. Note: Plots the coefficient of interest β, defined using different distance buffers; ninety per cent and ninety-five per cent CIs; standard errors clustered at the parliamentary division level, using Model 2 in Table 3
“Can political activism foster electoral participation?” Study examines “1913 Pilgrimage, a large-scale nationwide march in support of women’s suffrage.” Finds “women’s activism can drive political participation even in the virtual absence of women politicians.” www.cambridge.org/core/journal...
Graph showing: Monthly global air passengers
One of the most dramatic "blips" at a global level, ever.
robbieandrew.github.io/internationa...
Some thoughts on the strategic logic behind Kemi Badenoch’s announcement that she’d scrap the Climate Change Act (CCA).
It serves two functions:
1️⃣ It appeals to lukewarm pivotal voters in marginal seats sceptical of costly green measures.
2️⃣ It is designed to
www.theguardian.com/environment/...
"A growing number of studies have found that the most widely used offset programs continue to greatly overestimate their probable climate impact often by a factor of five to ten or more. "
www.annualreviews.org/content/jour...
Säulendiagramm der Sonntagsfrage zur Landtagswahl in Mecklenburg-Vorpommern von Infratest dimap für den NDR
Sonntagsfrage zur Landtagswahl in Mecklenburg-Vorpommern • Infratest dimap / NDR: AfD 38 % | SPD 19 % | CDU 13 % | DIE LINKE 12 % | BSW 7 % | GRÜNE 5 % | Sonstige 6 %
➤ Verlauf: wahlrecht.de/umfragen/lan...
🗓️ Landtagswahl: 20. September 2026
#ltwmv
Update of perhaps my favorite global climate policy indicator: The production gap report.
In fact, the gap between countries' planned fossil fuel extraction and global climate targets has widened.
Turning the tide on these indicators is essential for climate policy success.
productiongap.org
I hope the initiative will be underpinned by some cold-blooded political economy analysis to make it effective...
It's just a tough problem - doesn't mean it can/should not be tackled.
Quite the opposite, imho.
Update of perhaps my favorite global climate policy indicator: The production gap report.
In fact, the gap between countries' planned fossil fuel extraction and global climate targets has widened.
Turning the tide on these indicators is essential for climate policy success.
productiongap.org
For the first time the AfD has nudged ahead of the Union in this national polling aggregator, perhaps Germany's most reliable. Beware cope about the AfD losing this or that mayoral election, including in NRW this coming weekend. Something important is shifting.
Registration for experts interested in serving as Expert Reviewers and providing scientific comments on the First Order Draft of the Special Report on Climate Change and Cities is now open!
Register here: apps.ipcc.ch/comments/src...
⚠️ Registration closes 30 Nov2025
🔗 www.ipcc.ch/2025/09/17/p...
This has been a tumultuous week in Australian climate politics! And a good example of how target setting becomes a focal point for agenda-setting on climate, as per @jacobedenhofer.bsky.social, @chflachsland.bsky.social and my paper (below)
www.theguardian.com/australia-ne...
Welcome to the Hertie School @climatemorgan.bsky.social!
We're excited to welcome Jennifer Morgan as a new Fellow at the Hertie School! 🌍
She'll bring her global climate policy expertise to our teaching and research, working closely with the Centre for Sustainability.
Exceptionally informative.
Welcome Theodore, we are very happy to have you!
A new chapter starts today ✨️
As I'll be completing my PhD this year, I just started a new position at the @hertieschool.bsky.social as a Research Associate at their Centre for Sustainability.
An exciting year between Paris and Berlin, from the end of the PhD to the beginning of something new 🙌
Previously headed by the foreign office, Germany’s #climatediplomacy is now consolidated at the environment ministry again.
But some things have survived the recent change of government. (1/2)
www.bundesumweltministerium.de/pressemittei...
Text: Anti-Klima-Tracker Wir schauen dieser neuen Bundesregierung Merz mit unserem Anti-Klima-Tracker kritisch auf die Finger! In Regierungsverantwortung haben wir GRÜNE in den letzten Jahren einen Klima- und Transformationsfonds entwickelt, der wichtige Vorhaben für mehr Klimaschutz – und damit mehr Schutz für uns alle vor den schlimmsten Folgen der Klimakrise – in Deutschland angestoßen hat. Die Regierung Merz hätte die Möglichkeit, diese Erfolge auszubauen. Doch statt den Klimafonds für echten Fortschritt zu nutzen, wird er nun als „Verschiebebahnhof“ für ohnehin geplante Projekte aus dem Bundeshaushalt missbraucht. Erfolgreiche Programme zur klimaneutralen Modernisierung werden ausgebremst und Mittel stattdessen in die Subvention klimaschädlicher Geschäftsmodelle oder zweifelhafte Schaufensterprojekte umgeleitet – mit massiven Rückschritten beim Klimaschutz als Folge. Nur wenige Maßnahmen im Klima- und Transformationsfonds 2026 lassen noch Hoffnung auf echten Klimaschutz erkennen.
Im "Anti-Klima-Tracker", einer neuen Webseite, die letzte Woche online ging, kritisieren die Grünen klimapolitische Entscheidungen der Bundesregierung. Doch einige der dort gemachten Aussagen sind irreführend oder unzutreffend. Dazu ein Faktencheck: (1/12) www.gruene.de/politik-fuer...
Henrik Enderlein, former President of the Hertie School and founding Director of the @delorsberlin.bsky.social, passed away four years ago today at the age of 46.
We remember Henrik as a visionary leader, professor, teacher and mentor.
Our thoughts remain with Henrik's family and friends today.
Very excited to join AR7 WGIII as Lead Author in Chapter 6 'Enablers & Barriers'.
As of August, do we know what fossil CO2 emissions will do in 2025?
I made an estimate in July, using IEA projections of fossil fuel use, to estimate 0.8% growth in 2025.
Carbon Monitor has an estimate based on Jan-Jun data, 0.7%.
But what about countries?
www.eenews.net/articles/in-...
1/
Today (w/ @ox.ac.uk @stanford @MIT @LSE) we’re sharing the results of the largest AI persuasion experiments to date: 76k participants, 19 LLMs, 707 political issues.
We examine “levers” of AI persuasion: model scale, post-training, prompting, personalization, & more!
🧵:
The paper might sound nerdy, but it makes a broader point that I hope (political) economists take more seriously: institutions are not always constraints (though macro-level ones often are), sometimes they are choice variables for policymakers whose main purpose is not to directly influence
As next to nobody understands elasticity of demand, I propose calling increased car use from building an extra lane 'the Jevons effect', and increased biking from building bike infrastructure 'the Hidalgo effect'.
They differ only in whether we like the outcome, but hey, that's how all this works.
Working paper update 👇
Working paper update 👇
