"In 2004, it took the world a full year to install 1 gigawatt of solar power capacity. Today, twice that amount goes online each day."

And... we're off Join us next Spring at the University of Potsdam for the third Applied Causal Graphs workshop: applied-causal-graphs.de Now that the date and place are set and two of the keynote speakers are fixed, all we need is an abstract from you.

The Amazon may be entering a climate state Earth hasn’t seen in millions of years. Research led by UC Berkeley scientists identifies a shift toward hypertropical conditions with major ecological consequences. news.berkeley.edu/2025/12/10/a...

This looks like a most interesting PhD program for e.g. econ students with climate interests.

We love to say "costs fall X% every time capacity doubles." This paper looks at 87 technologies and says: actually, no. Past learning rates are not reliable predictors of future learning.

Key findings from one of the largest research programs on land-based carbon removals out now! I am proud to have played a tiny role in this huge, interdisciplinary and collaborative effort, with so many brilliant researchers.

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my fantastic colleagues @ariannaornaghi.bsky.social and Egon Tripodi are hiring two PhD students in media and behavioral economics with @bsoeberlin.bsky.social - I highly recommend applying! All details are here:

This story was inspired by a conversation with a fossil fuel exec in Paris a few days after the big outage in Spain. He blamed too much renewable energy as the cause. Was that really it? Turns out: No. @npr.org takes you through a new report on what happened + impacts of renewable misinformation.

Cool new AER paper uses data from Clean Air Act offset markets to assess the efficiency of air pollution regulation. The analysis finds that marginal benefits of abatement exceed mean offset prices more than ten-fold, across most regions and pollutants.

Three more weeks to apply for Associate/Full Professor of International Economics at the @hertieschool.bsky.social, joint with @kiel.institute. Come join us and be our new colleague in Berlin! Details below👇🏼

Which policies can support the scaling up of geological carbon removal? Our discussion with Francesca Battersby and Paul Davies, led by Steve Smith, is now online to watch at the link below. Thanks to @co2rehub.bsky.social for the invitation! @hertieschool.bsky.social @hertiesustain.bsky.social

I look forward to presenting our work on policy instruments to support geological carbon dioxide removal this Wednesday, 18 June. Webinar details below, and I look forward to seeing you there!

We are looking for a student research assistant supporting a quantitative climate politics literature review. @jacobedenhofer.bsky.social 👇 hertie-school.dvinci-easy.com/en/p/en/jobs...

Today, the first results of our 3-year Basic Income Study in Germany were released publicly. Here some initial press coverage by ARD (In German): www.tagesschau.de/inland/innen... More details (and several papers) to come in the coming months - stay tuned!

Reine Männerpodien? Sind wieder ~okayer geworden. Ist doch alles eh schon anstrengend und Frauen sagen immer ab. So hab ich's zuletzt wieder sehr häufig gehört. Nein. Ist nicht okay. Und wir werden euch wieder und wieder und wieder und wieder daran erinnern.

what a fantastic resource!

JOB OPPORTUNITY ➤ We are seeking a distinguished and high-impact scholar for a joint appointment as Associate Professor of Social Policy in the @dspi-oxford.bsky.social and Director of the Economics, Inequality & Opportunity (EIO) Programme of @inetoxford.bsky.social 🔗 www.inet.ox.ac.uk/vacancies

We've reached 1.5°C global warming. With current policies, we're heading for a catastrophic 2.7°C warming. A new review paper in Science shows: this would change the Arctic 'beyond recognition', with knock-on effects (like rising seas) around the world. 🌊 www.science.org/doi/10.1126/...

📢Veröffentlichung des Zweijahresgutachtens vom Expertenrat für Klimafragen @expertenratklima.bsky.social: Es gibt Fortschritte beim Klimaschutz, aber der Trend reicht noch nicht für 2030. Verkehrssektor ist Sorgenkind mit steigenden Emissionen. So weit, so schlecht, so bekannt. Was ist neu? 1/n 👇

Submit to present at the Women in Empirical Microeconomics Conference at UChicago. Thanks to the organizers for inviting me to participate in this great event! Conference is Aug 21-22. Submission deadline is Feb 28.

Planning your climate or environment syllabus? I like to show short videos so students & I can visualize some of the things we're talking about. Here are some of the ones I like:

Warum es wichtig ist, sich der unglaublich positiven Entwicklungen der letzten Jahrzehnte bewusst zu sein: Wenn wir fälschlicherweise denken, dass alles schlechter wird, dann können wir zynisch und hoffnungslos werden – was zu Passivität, aber auch zu Extremismus führen kann.

Here are the first five sets of slides: 01 Introduction: psantanna.com/DiD/01_Intro... 02 Classical 2x2 setup: psantanna.com/DiD/02_two_b... 03 Clustering issues: psantanna.com/DiD/03_Clust... 04 Functional form: psantanna.com/DiD/04_Funct... 05 Covariates: psantanna.com/DiD/05_Covar...

Academics from poorer socio-economic backgrounds are more likely to - not publish - have outstanding publication records - introduce more novel scientific concepts - less likely to receive recognition, as measured by citations, Nobel Prize nominations, and awards. www.nber.org/papers/w33289

Study models of naive social transmission of beliefs!

We are hiring! 🌍  The #ClimatePolicy team led by @chflachsland.bsky.social is looking for a Doctoral Researcher/Research Associate in multi-level climate governance in Germany. Learn more here: hertie-school.dvinci-easy.com/en/p/en/jobs...

It is a while since I posted this, but just your annual reminder that Carbon Dioxide Removal (CDR) will never scale to compensate all emissions (& it would be a ludicrously expensive alternative to reductions). If you like your money, then the razor-sharp focus would be on reducing emissions!

For anyone who missed @carbonbrief.org’s COP29 webinar today, you can now watch a recording on our site ⬇️ www.carbonbrief.org/webinar-carb...

Dear energy & environmental econ folks, until Dec 16th you can submit your paper to the CESifo Area Conference in Energy & Climate Economics (14-15 Mar 25)! Keynote: Ryan Kellogg, Chicago @auffhammer.bsky.social and I look forward to welcoming you in Munich! www.cesifo.org/en/event/202...

“My main concern about biodiversity credits is not that they’re harmful – they can’t do much harm if not many people buy them. My main concern is the way they steal the political discourse & political capital away from more important & impactful solutions.” Sophus zu Ermgassen, University of Oxford

Okay, the first Women in Econ starter pack was such a success that we quickly hit the BlueSky starter pack limit (150 accounts). But, I've got a version 2.0 with even more awesome economists you should follow! go.bsky.app/J6nhkk7

Hey all, I created a starter pack with a list of Black economists and academics for an easily accessible list of folks doing research that we can all follow and cite #Blacksky #AddtoBlacksky #Econsky: go.bsky.app/RyKSzcb

Global CO2 emissions keep going up.

For a short break from politics: I am including more papers on the workings of environmental policy instruments in the Global South in my teaching, and would be super grateful for suggestions of your favorite papers (& happy to share my reading list, of course)! Thank you! #EconSky #EnvEcon

Biodiversity is declining, yet we have limited knowledge about how that affects human well-being. My work linking bats, insecticide use, and human infant health is out today in Science (science.org/doi/10.1126/science.adg0344), and tells a complex story about how those are connected.

Maybe others will find this useful - I made a simple feed searching for posts with papers linked on Bluesky with climate related keywords. bsky.app/profile/did:...

Very excited to become part of the Berlin Quantitative Spatial Research Seminar for the next season! Thank you for the invitation @ahlfeldt.bsky.social - I look forward to the discussions! And, everyone, come join us in spring!

Thank you @hertieschool.bsky.social and @hertiesustain.bsky.social for the very warm welcome over the last months! Super happy to be part of such a fantastic group of professors, researchers and students at the Hertie School.

Happening next Wednesday ‼️ Join us for the first Sustainability Colloquium of the semester. With @joarlinghaus.bsky.social ▶️ Follow the link to register