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lisawarner.bsky.social
Lisa Warner
@lisawarner.bsky.social
980 followers 1.2K following 46 posts
Professor of Social Psychology, research mostly on (health) behaviour change & social interactions @ MSB Medical School Berlin, runs on chocolate and coffee, she/her
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jan 6
This new publication is very close to my green heart 🌿

It shows estimates of greenhouse gas emissions caused by travel to @European Health Psychology Society (EHPS) conferences, and offers two solutions for preserving not only human health, but also the health of the planet: (🧵1/4)
Bar chart illustrating the emission saving potential of different locations and online attendance rates. The first bar shows the comparison of assuming an on-site only Bremen conference with all participants travelling to Bremen and no online participation option - 0% saving. The least saving potential would be hybrid conferences held in London or Paris (assuming 8% online attendees) - both bars show 10% saving as compared to the first bar. The next bar shows the hybrid organisation of the Bremen conference with 8% online attendees, which reduced the emissions by 15% as compared to Bremen if it would have been on-site only. Hybrid Frankfurt, Brussels and Amsterdam conferences (with 8% online attendance) would reduce emissions by 15% and 16% as compared to the first bar. It is estimated that the Amsterdam location would derive similar results for Groningen, which is scheduled for 2025. If Bremen would have had a 24% online attendance rate, it would have reduced emissions by 29% as compared to on-site only Bremen. The last two bars show emission saving potential, if the conference would be held only every second year (50%) or fully online (97%) on the basis of Bremen participants. The bar chart shows the percentage and absolute numbers of delegates per conference and assumed transportation mode as well as online participation rates. For Dubrovnik, Bratislava and Bremen the numbers are based on registration data. For Cascais and Groningen the same participants with the same modi were assumed as in Bremen. The numbers are: Dubrovnik 8% (72 participants) via train/car/bus, 35% (297 participants) via short-haul flight, 42% (363 participants) via long-haul flight, 15% (125 participants) via super long-haul flight, none online as this was not a hybrid conference. Bratislava: 14% (94 participants) via train/car/bus, 41% (285 participants) via short-haul flight, 17% (121 participants) via long-haul flight, 4% (26 participants) via super long-haul flight, 24% (170 participants) online. Bremen: 37% (296 participants) via train/car/bus, 40% (318 participants) via short-haul flight, 9% (69 participants) via long-haul flight, 6% (46 participants) via super long-haul flight, 8% (66 participants) online. Cascais: With projected data from Bremen 2% (15 participants) via train/car/bus, 4% (34 participants) via short-haul flight, 79% (627 participants) via long-haul flight, 7% (53 participants) via super long-haul flight, 8% (66 participants) online. Groningen: With projected data from Bremen 51% (402 participants) via train/car/bus, 26% (207 participants) via short-haul flight, 9% (74 participants) via long-haul flight, 6% (46 participants) via super long-haul flight, 8% (66 participants) online. world map with integrated zoomed in Europe map, each locating Dubrovnik as conference location. Aggregated data of delegates’ affiliation cities are the starting points of smaller arrows, which funnel into larger arrows per continent, pointing at the conference location to visualise where the majority of delegates started their journey to the respective conference locations. The embedded Europe map also shows lines connecting all affiliation cities with the conference cities. The figures also show the total distances travelled to the conference location (not adjusted for different number of delegates) split by participants from overseas and from Europe (overseas: Dubrovnik 3,420,046km; within Europe: Dubrovnik 1,912,441km)
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jun 26
Emission values from: www.carbonfootprint.com/calculator.a...
carbonfootprint.com - Carbon Footprint Calculator
Use the World’s most popular online carbon footprint calculator, and it's FREE. Calculate your carbon emissions from Buildings, Cars, Flights and other sources.
www.carbonfootprint.com
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jun 26
I used the 10 hours, e.g., to work on the slides for our roundtable tomorrow together with ‪@ajamesgreen.bsky.social‬: "Scientists’ hypermobility and resource use: How can we get from bad conscience to greener choices in academia?" Looking forward to continuing conversations at SIPS!
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jun 26
My #FlightFree journey across Europe was a genuinely pleasant experience - with just one change in Vienna and incredibly stimulating conversations on public health, trust in science, climate change, and even the meaning of life with fellow passengers. 💬
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jun 26
This week I travelled from Berlin to Budapest by train to attend the #SIPS2025🚆 Instead of flying, I chose a low-emission alternative - the whole trip by train caused only about 10 kilograms of CO₂, compared to approx. 190 kilograms by plane. That’s just 5% of the emissions! 🌍
Sign at station for train to Budapest Opening ceremony of SIPS Roundtable Starting Slide
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jun 26
Emission values from: lnkd.in/eyVpPCBt
LinkedIn
This link will take you to a page that’s not on LinkedIn
lnkd.in
lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jun 26
I used the 10 hours, e.g., to work on the slides for our roundtable tomorrow together with
‪@ajamesgreen.bsky.social‬: "Scientists’ hypermobility and resource use: How can we get from bad conscience to greener choices in academia?"
Looking forward to continuing conversations at SIPS!
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jun 26
My #FlightFree journey across Europe was a genuinely pleasant experience - with just one change in Vienna and incredibly stimulating conversations on public health, trust in science, climate change, and even the meaning of life with fellow passengers. 💬
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Reposted by Lisa Warner
claudiaterane.bsky.social
Claudia Teran-Escobar @claudiaterane.bsky.social · Jun 25
1/ 🚨 New preprint alert!

We (@lisawarner.bsky.social @ajamesgreen.bsky.social and myself) estimated the carbon footprint of air travel associated with >20 international conferences (2023–2025) in psychology & behavioral medicine.

Spoiler: it’s a lot. 🛫🌍🧠

Preprint 👉 doi.org/10.31234/osf...
🧵
doi.org
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Reposted by Lisa Warner
kschwanke.bsky.social
Karsten Schwanke @kschwanke.bsky.social · Jun 21
#ShowYourStripes

To compare global warming with that in Germany, I first shrank the global stripes in the y-axis and then placed the data from Germany behind them.
The result: warming is happening twice as fast in Germany.
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jun 21
...and it's even 1.9 degrees I found out later 🤒
lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jun 21
Data by Deutscher Wetterdienst & Umweltbundesamt - German Environment Agency, climate stripes by Ed Hawkins 👏
lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jun 21
Germany has warmed by about 1.7 degrees Celsius since official meteorological measurements began in 1881. In Berlin, we can see and feel the effects: less snow, and longer, hotter, and drier summers 🌡️
Today 21st June is #ShowYourStripes day - how does climate change look in your area?
Climate warming stripes for Berlin 1850-2024
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Apr 12
😂
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Apr 12
Still, I would argue for a sensible use of AI and not for playing around with it for hours (eg, fabricating pics of little plastic figures of oneself as it seems to be trendy right now 😅)
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Apr 12
If numbers are compared, it's well below 5% emissions for an online conference attendance as compared to flying anywhere...
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Apr 12
Faced similar rumours when I found out how large the carbon footprint of flying to conferences is, here I often heard the counter argument "but virtual meetings emit a lot as well".
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Apr 12
Yes, definitely a lot of rumours going around on AI energy use, so I actually craved an article with estimates and comparisons!
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Apr 12
Super interesting read, thanks Julia for posting it!
dingdingpeng.the100.ci
Julia M. Rohrer @dingdingpeng.the100.ci · Apr 12
If you’re interested in actual numbers, Hannah Ritchie has a post on the topic www.sustainabilitybynumbers.com/p/ai-energy-... and Wikipedia has a list of consumption by country: en.m.wikipedia.org/wiki/List_of...
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Reposted by Lisa Warner
ehpssynergy.bsky.social
EHPS Synergy @ehpssynergy.bsky.social · Mar 18
📸 Wrapped up an amazing EHPS Synergy Winter School in Berlin! 🎉 Two days of hands-on learning in mixed & multi-level modeling with an incredible group of researchers. Huge thanks to our facilitators & participants! 🚀 #EHPSWinterSchool #HealthPsychology #RStats #MultilevelModeling
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Feb 14
#SheFigures #womeninscience #gendergap #genderequality
lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Feb 14
🙆‍♀️ Wow, recent data on academic gender gaps in EU's report:
- although women obtain more bachelor's degrees
- fewer women obtain a doctorate
- 1/3 of EU researchers are women
- 16% of authorship teams are gender balanced
- lower overall funding success for women
Way to go!
She figures 2024 - Publications Office of the EU
Equality in research and innovation (R&I) is a core value of the European Union, essential for fostering excellence, diversity, and inclusiveness. The She Figures publication is the European C...
op.europa.eu
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jan 22
... and this dual RCT shows that the recipients of the calls made by the volunteers profirted in terms of reduced loneliness, too: doi.org/10.1001/jama...
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jan 22
But volunteers who continued to volunteer for more than 2 hours per week at the 12-month follow-up reported lower levels of loneliness than those who did not continue to volunteer. 4/5
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jan 22
There was a significant decrease in both loneliness scales in the volunteer group at T2, but not in the control group. Most of the positive effects of volunteering were not sustained after the 6-month volunteering period of the study. 3/5
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lisawarner.bsky.social
Lisa Warner @lisawarner.bsky.social · Jan 22
We aimed to investigate effects of phone-delivered loneliness interventions by older volunteers screened as lonely, for older adult recipients with low income, lived alone, felt lonely, were digitally excluded. Allocation at random into volunteering or control group (psychoeducation). 2/5
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