Marion Leroutier's Avatar

Marion Leroutier

@leroutierm

Environmental economist and Assistant prof. at CREST and ENSAE, Paris Climate policy, air pollution, health Prev.: IFS, Misum; PhD from PSE & Cired Posts in English & French website: https://marionleroutier.github.io/

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Latest posts by Marion Leroutier @leroutierm

1/10 🧵 The U.S. just captured a sitting head of state in a military operation—and Trump says the U.S. will "run" Venezuela “for now.” Whatever you think of Maduro, this is the most consequential unilateral move in the hemisphere since Panama (1989).

03.01.2026 18:39 👍 127 🔁 65 💬 2 📌 9

That's amazing and well-deserved, well done Christine and IFS team!!

13.11.2025 12:19 👍 2 🔁 0 💬 0 📌 0
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🚨 We economists at @crestumr.bsky.social IPParis are hiring🚨

We have 3 positions:
1 assistant prof in econometrics (ENSAE
1 assistant prof in Digital Economics and IO (Telecom)
1 assistant or associate, all fields (Polytechnique)

econjobmarket.org/positions/11...

Please circulate! #econsky

15.10.2025 08:32 👍 27 🔁 19 💬 1 📌 4

Just out: the latest version of our paper on gender and carbon footprints!

11.11.2025 10:26 👍 14 🔁 4 💬 0 📌 1
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Mediapart et « Libération » révèlent des images inédites du 25 mars 2023. Elles montrent des consignes prohibées et dangereuses données par la hiérarchie.

Enquête vidéo de @camillepolloni.bsky.social et @laurawoj1.bsky.social 👉‍ www.mediapart.fr/journal/fran...

05.11.2025 11:18 👍 1932 🔁 1748 💬 116 📌 280
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Research Fellowships Each year, IAST invites applications for post-doctoral Research Fellowships, which offer candidates an opportunity to devote themselves full-time to their research at the start of their careers. Fello...

📢 Two weeks left to apply for a (2-year) research fellowship @iast.fr

A fantastic opportunity to work full-time on your own research, in an interdisciplinary environment, and in a lovely city in the South of France.

Deadline: November 15, 2025

How to apply: www.iast.fr/research-fel...

28.10.2025 13:44 👍 9 🔁 10 💬 0 📌 0

We are hiring an Assistant or Associate Professor in Computational Sociology! Come join a vibrant and diverse sociology and CSS team at CREST. Great students, great colleagues, and amazing working condition.

17.10.2025 07:48 👍 3 🔁 1 💬 0 📌 0

Come work with us at @crestumr.bsky.social !

You will find a fantastic research environment, a collegial atmosphere and super bright students ✨

15.10.2025 19:48 👍 2 🔁 2 💬 0 📌 0
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It’s goodnight Vienna as Paris sleeper train to Austria and Berlin hit by cuts Some Nightjet services suspended from mid-December after French withdrawal amid public budget crisis

Paris-Berlin sleeper: low carbon, 2 years old, constantly full, but currently losing SNCF a few million EUR/yr

Intl Jet fuel tax exemptions are 80 years old and cost the EU 22 million EUR/yr for the Paris-Berlin route alone.

And you're cutting... the sleeper?

www.theguardian.com/travel/2025/...

29.09.2025 21:31 👍 493 🔁 273 💬 12 📌 11

The potential for CO2 is prudently estimated at 0.7°C of warming.

Meaning if we stay on the current trajectory of +2.7°C in 2100 (and not even net-zero by then), it will hardly be possible to reverse to +1.5°C.

04.09.2025 08:06 👍 4 🔁 1 💬 0 📌 0
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Racontons ce qui se construit. Pas seulement ce qui s’effondre Financement participatif organisé par Expertises climat - Jusqu'au 8 octobre inclus, 1% for the Planet double vos dons au profit des 40 associations sélectionnées aux Rencontres pour la Planète.

L'asso Expertise climat fait un super travail pour que les médias s'appuient sur le travail des scientifiques et pas sur de pseudo-experts autoproclamés, pour traiter des questions de climat et de biodiversité.

Ils ont besoin de vos dons pour un nouveau projet :

www.helloasso.com/associations...

01.09.2025 08:20 👍 11 🔁 8 💬 1 📌 0
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Climate change has increased the odds of extreme regional forest fire years globally - Nature Communications The authors show that extreme fire years in global forests align with rare fire weather extremes. Climate change has made such extremes 88-152% more probable. These findings highlight the need for act...

🌳 🔥 🌎 Our new paper: The extreme fire-prone #weather underpinning some of the worst #wildfire episodes this century has become more than twice as likely due to #climate change—a trend now evident across much of the world's tropical and mid-latitude #forests.

www.nature.com/articles/s41...

11.07.2025 08:54 👍 91 🔁 46 💬 1 📌 3
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Climate risks: no longer the tragedy of the horizon The European Central Bank (ECB) is the central bank of the European Union countries which have adopted the euro. Our main task is to maintain price stability in the euro area and so preserve the purch...

Influx of Chinese EVs along the lines of Japanese/Korean cars in the 80s: negligible overall GDP impact, acc to IMF calculations.

Climate change, natural disaster scenario, until 2030: -4.7% of GDP in the euro area.

Just to put that into perspective. www.ecb.europa.eu/press/blog/d...

09.07.2025 14:09 👍 76 🔁 30 💬 3 📌 3
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La France a pris des « retards importants » pour tenir l’objectif de neutralité carbone en 2050 Dans son rapport annuel, le Haut Conseil pour le climat regrette que le rythme de décarbonation ait « beaucoup ralenti » en 2024 et déplore les reculs environnementaux, comme pour les zones à faibles ...

Dans son rapport annuel, le Haut Conseil pour le climat regrette que le rythme de décarbonation ait "beaucoup ralenti" en France en 2024 et déplore les reculs environnementaux (ZFE, ZAN, etc). Ces retards "importants" sont "incompatibles" avec les objectifs 2030/2050 www.lemonde.fr/planete/arti...

03.07.2025 06:50 👍 63 🔁 30 💬 3 📌 3
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Is it "good" or "bad" when skilled people leave low-income countries? We summarized the evidence in favor of "brain gain" vs. "brain drain": www.science.org/doi/epdf/10....
Ungated PDF: johanneshaushofer.com/research

22.05.2025 18:28 👍 183 🔁 66 💬 6 📌 5

Very warm congratulations to @linusmattauch.bsky.social! Very well deserved.

18.06.2025 11:39 👍 6 🔁 1 💬 0 📌 0
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Years of Coal Backlash Undermine India’s Energy Security Push India’s plan to expand one of the world’s largest coal power fleets in order to meet its growing energy needs is being undone by a shortage of companies able and willing to help build new plants.

The energy transition continues to be the best beat. "India’s plan to expand one of the world’s largest coal power fleets in order to meet its growing energy needs is being undone by a shortage of companies able and willing to help build new plants."

🎁 link
www.bloomberg.com/news/article...

20.05.2025 09:32 👍 40 🔁 8 💬 3 📌 2
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NEW ANALYSIS: UK's solar power surges 42% to a new record, after the sunniest spring on record

* For the first time, solar was >10% of UK generation in consecutive months (April/May 2025)
* In 2025, solar has already avoided gas imports that would've cost £600m

www.carbonbrief.org/analysis-uks...

04.06.2025 15:40 👍 454 🔁 177 💬 7 📌 19
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The gender gap in carbon footprints: determinants and implications - Grantham Research Institute on climate change and the environment This paper uses detailed data on consumption patterns from France to quantify the gender gap in carbon footprints related to food and transport and investigate its underlying drivers.

📄 And much more in the full working paper, available here:
www.lse.ac.uk/granthaminst... (12/12)

20.05.2025 15:16 👍 3 🔁 1 💬 0 📌 0

🎯 Policy takeaways? Climate policy could:
- Acknowledge gender gaps as they may drive climate policy costs and support
- Target norms (masculinity ≠ meat/car) (11/12)

20.05.2025 15:16 👍 1 🔁 0 💬 1 📌 0

📉 If men adopted carbon intensity of women, keeping quantities constant, 🇫🇷 would cut 13 MtCO₂= 3x what’s required annually in food & transport to meet 2030 targets (10/12)

20.05.2025 15:16 👍 1 🔁 1 💬 1 📌 0
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👨‍👩‍👧 Household structure matters.

- Food: women in couples eat more like men ➡️ convergence
- Transport: men in couples (esp. with kids) emit way more ➡️ specialization (9/12)

20.05.2025 15:16 👍 1 🔁 0 💬 1 📌 0

✈️ Planes? No gender gap. Suggests gendered preferences, not climate concern, drive red meat and car emissions
➡️ 🧠 Gendered norms could play a role here. Our findings align with studies linking masculinity to:
- red meat consumption
- car usage (8/12)

20.05.2025 15:16 👍 1 🔁 0 💬 1 📌 0
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For 🥩, women simply eat less of it as a % of their diet.

For 🚙, it’s not so much that women use it less, but:

- Their car trips have a higher occupancy rate
- Based on singles, they own less carbon-intensive cars
..which decreases their emissions relative to men (7/12)

20.05.2025 15:16 👍 1 🔁 0 💬 1 📌 0
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🔍 Digging further…We additionally adjusting for calories eaten and km traveled, partly reflecting biological differences and on the labor market.

🥩 Red meat and 🚙 car usage account for 70%–100% of the remaining gender gap. (6/12)

20.05.2025 15:16 👍 1 🔁 0 💬 1 📌 0
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The gap decreases to 18% once we adjust for socio-economic differences between men and women (age, education, household income, employment status) (5/12)

20.05.2025 15:16 👍 1 🔁 0 💬 1 📌 0
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We find average carbon footprints from food + transport:

Men: 5.3 tCO₂e
Women: 3.9 tCO₂e

⚖️ The gender gap in emissions is as big as the gap in emissions for individuals with below-median vs above-median household income (4/12)

20.05.2025 15:16 👍 1 🔁 0 💬 1 📌 0
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We know surprisingly little on this question. Why?

Consumption-based emissions often estimated from household budget surveys where disentangling male and female consumption is tricky.

➡️We use individual food & transport surveys + detailed emission intensity by product, mode & car model (3/12)

20.05.2025 15:16 👍 0 🔁 0 💬 1 📌 0

Previous research show:
- Perceived costs=key determinant of climate policy support
- Climate policy costs and emissions heterogeneous within income groups
- Gender differences in consumption patterns and climate concerns

➡️Is gender a relevant dimension of heterogeneity in carbon footprint? (2/12)

20.05.2025 15:16 👍 1 🔁 0 💬 1 📌 0
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🚨 New working paper! We show that women in France emit 26% less CO₂ than men from food & transport.

🥗Food + 🚗 Transport =50% of individual carbon footprint — we show this isn’t just about biology or labor market differences.

A thread👇🧵(1/12)

Link to wp: www.lse.ac.uk/granthaminst...

20.05.2025 15:16 👍 18 🔁 8 💬 1 📌 1