Marion Leroutier
@leroutierm.bsky.social
2.2K followers 820 following 74 posts
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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leroutierm.bsky.social
🚨 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...
Reposted by Marion Leroutier
benmsanderson.bsky.social
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/...
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
www.theguardian.com
Reposted by Marion Leroutier
adrien-fabre.bsky.social
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.
joerirogelj.bsky.social
NEW STUDY: How much CO2 can we safely store in geological formations?

In a new @nature.com study, we cross-check established academic and industry estimates with various risk factors.

We find a prudent geological CO2 storage limit that is about 10x smaller. /1
Reposted by Marion Leroutier
philippequirion.bsky.social
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...
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.
www.helloasso.com
Reposted by Marion Leroutier
mattwjones.bsky.social
🌳 🔥 🌎 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...
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...
www.nature.com
Reposted by Marion Leroutier
codendahl.bsky.social
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...
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...
www.ecb.europa.eu
Reposted by Marion Leroutier
audreygarric.bsky.social
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...
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 ...
www.lemonde.fr
Reposted by Marion Leroutier
johanneshaushofer.com
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
Reposted by Marion Leroutier
jansteckel.bsky.social
Very warm congratulations to @linusmattauch.bsky.social! Very well deserved.
eaere.bsky.social
🏆𝗘𝘂𝗿𝗼𝗽𝗲𝗮𝗻 𝗔𝘄𝗮𝗿𝗱 𝗳𝗼𝗿 𝗥𝗲𝘀𝗲𝗮𝗿𝗰𝗵𝗲𝗿𝘀 𝗶𝗻 𝗘𝗻𝘃𝗶𝗿𝗼𝗻𝗺𝗲𝗻𝘁𝗮𝗹 𝗘𝗰𝗼𝗻𝗼𝗺𝗶𝗰𝘀 𝘂𝗻𝗱𝗲𝗿 𝘁𝗵𝗲 𝗔𝗴𝗲 𝗼𝗳 𝗙𝗼𝗿𝘁𝘆🏆

We are delighted to announce the winner of the 2025 European Award for Researchers in Environmental Economics under the Age of Forty: Linus Mattauch (TU Berlin & Potsdam Institute for Climate Impact Research)
Reposted by Marion Leroutier
akshatrathi.bsky.social
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...
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.
www.bloomberg.com
Reposted by Marion Leroutier
drsimevans.carbonbrief.org
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...
leroutierm.bsky.social
🎯 Policy takeaways? Climate policy could:
- Acknowledge gender gaps as they may drive climate policy costs and support
- Target norms (masculinity ≠ meat/car) (11/12)
leroutierm.bsky.social
📉 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)
leroutierm.bsky.social
👨‍👩‍👧 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)
leroutierm.bsky.social
✈️ 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)
leroutierm.bsky.social
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)
leroutierm.bsky.social
🔍 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)
leroutierm.bsky.social
The gap decreases to 18% once we adjust for socio-economic differences between men and women (age, education, household income, employment status) (5/12)
leroutierm.bsky.social
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)
leroutierm.bsky.social
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)
leroutierm.bsky.social
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)
leroutierm.bsky.social
🚨 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...
Reposted by Marion Leroutier
leroutierm.bsky.social
Merci @audreygarric.bsky.social pour cet article dans Le Monde présentant les résultats des recherches menées avec @ondineberland.bsky.social sur les écarts d'empreinte carbone femmes-hommes.
audreygarric.bsky.social
Les émissions de CO₂ des hommes sont supérieures de 36 % à celles des femmes dans les transports et l’alimentation, selon une étude publiée par la London School of Economics. La viande rouge et les voitures creusent l'écart. Très intéressante étude ⤵️ www.lemonde.fr/planete/arti...
Plus de viande rouge et de grosses voitures : pourquoi les hommes émettent plus de CO2 que les femmes
Les émissions de CO₂ des hommes sont supérieures de 36 % à celles des femmes dans les transports et l’alimentation, les deux secteurs les plus émetteurs en France, selon une étude publiée par la Londo...
www.lemonde.fr