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Soemano Zeijlmans

@soemanozeijlmans.eu
85 followers 97 following 50 posts

💊 Welfare-pilled utility maxxer 🔍 Environmental economist building a better world with evidence instead of vibes. 💚 Research Associate at @GivingGreen.earth 🌍 Co-director of @EffectiveEnvironmentalism.org 🎒 Offbeat travel, nature, connections. 🏃‍♂️ Running

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Soemano Zeijlmans @soemanozeijlmans.eu · 26/08/2026
We're hiring a Director of Growth at @givinggreen.earth. Come join our team and help grow high-impact giving to tackle climate change! www.givinggreen.earth/careers
givinggreen.earth
Careers | Giving Green
Interested in joining Giving Green's team of climate researchers? See our open roles.
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Soemano Zeijlmans @soemanozeijlmans.eu · 17/07/2026
What if the biggest market failure is one that your economics professors won't even mention? A new article by @stijnbruers.bsky.social suggests it might be animal suffering, if we set the costs based on the experiences of animals rather than humans' altruistic preferences. doi.org/10.1108/IRER...
doi.org
Determining an optimal animal welfare levy
A literature review is conducted of five recently developed methodologies to determine an optimal non-anthropocentric animal welfare levy that internalizes the social costs of animal suffering into th...
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Soemano Zeijlmans @soemanozeijlmans.eu · 17/07/2026
🦟 If there's one video you should watch this weekend, let it be this one. In 1955, 150 men met in a nondescript lecture hall in Mexico City, thinking they were going to save the world from malaria. Sub-Saharan Africa was left off the map, but we can still fix this. www.youtube.com/watch?v=BJYf...
youtube.com
The Deadliest Decision You've Never Heard of
YouTube video by Justin Portela
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Effective Environmentalism @effectiveenvironmentalism.org · 18/03/2026
The latest effective environmentalism newsletter is now available on Substack! Not subscribed yet? Leave your email for monthly insights into effective climate action. effectiveenvironmentalism.substack.com/p/low-hangin...
effectiveenvironmentalism.substack.com
There's a lot of low-hanging fruit
There are millions of people working on climate, but some of the lowest-effort highest-impact projects still aren't being picked up.
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Giving Green @givinggreen.earth · 24/02/2026
📣Giving Green has launched new research & Top Biodiversity Nonprofits, @gfi.org & @wetlandsint.bsky.social! 📣 We identified high-impact strategies on land & sea: 🌱 Alt. proteins + wetlands protection 🌊 Bycatch reduction + FMFO alternatives 🔎Learn more: tinyurl.com/nhxbwtse
tinyurl.com
Giving Green Launches New Biodiversity Research and Top Biodiversity Nonprofits  | Giving Green
Learn about Giving Green's new research on effective biodiversity donations and Top Biodiversity Nonprofits
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emily thai @ethai.bsky.social · 11/11/2025
men will literally pledge 10% of their lifetime income to highly effective charities before going to therapy
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Rutger Bregman @rutgerbregman.com · 25/11/2025
I wish I didn’t have to share this. But the BBC has decided to censor my first Reith Lecture. They deleted the line in which I describe Donald Trump as “the most openly corrupt president in American history.” /1
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Giving Green @givinggreen.earth · 06/10/2025
We’re flying the nest! 🦋 Giving Green is now an independent nonprofit, with a fresh brand & site to match. Huge thanks to IDinsight for supporting our growth since we were a side project 💚 Learn more: tinyurl.com/yc5eyvx6
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Giving Green @givinggreen.earth · 02/07/2025
🌿 How can #philanthropy best support #biodiversity? Our latest consulting project will explore: 💸 The philanthropic opportunity 🏞️ 2 focus areas: land use change & wild species exploitation 💪The top biodiversity nonprofits 🔗 More here: tinyurl.com/yc3u5ze6
tinyurl.com
Preview: upcoming research into philanthropic strategies for biodiversity | Giving Green
An introduction to an upcoming body of research that will examine high-impact philanthropic strategies to protect biodiversity and the ecosystem services it supports.
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Soemano Zeijlmans @soemanozeijlmans.eu · 02/07/2025
The latest EE newsletter is fresh in your inboxes!
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Ruben Dieleman @dieleman.bsky.social · 06/06/2025
🌳 The latest @effectiveenvironmentalism.org newsletter edition is packed with content! - A new career guide for building a high-impact career 🧩 - What we’ve been reading and listening to 🗞️ - Some great job openings and opportunities! 🔭 Check it out!👇
effectiveenvironmentalism.substack.com
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Soemano Zeijlmans @soemanozeijlmans.eu · 21/05/2025
Next Tuesday I'll join the 10% Club in Eindhoven (NL) at their event about how your donations can drive key innovations to reach net-zero emissions. With exciting speakers from Doneer Effectief and Future Cleantech Architects! Tickets via the link below. lu.ma/r2wksqzn
lu.ma
Accelerate Climate Innovations · Luma
Climate change affects us all and there are many charities to raise the alarm and address it. However, which innovations are needed to close the gap towards…
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The Good Food Institute @gfi.org · 16/05/2025
👩🏼‍🔬The scientific ecosystem—especially around cultivated meat—reported major breakthroughs in 2024, and faster than expected. Download the full report 👉 bit.ly/4jVLSEF Look below for a few highlights that shaped 2024 ⤵️
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Soemano Zeijlmans @soemanozeijlmans.eu · 17/05/2025
"Angry person yells at subway wall."
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The Good Food Institute @gfi.org · 21/04/2025
As GFI's @emmaiggie.bsky.social explains, Avian flu outbreaks like the one we're experiencing now are not a fluke — they're a recurring problem that is unlikely to stop until we diversify our protein supply with new, animal-free methods of production. Learn more: www.fooddive.com/news/eggs-bi...
fooddive.com
Bird flu is a recurring risk. It’s time food companies planned for it.
As egg prices remain volatile, businesses should think about embracing alternatives to the protein, writes Emma Ignaszewski of the Good Food Institute.
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Andrew Dessler @andrewdessler.com · 08/04/2025
This seems bad. Over time, what people have assumed was the physical limit of human heat tolerance keeps going down. It used to be thought it was a wet-bulb of 35C, now it seems it's more like 32C for resting humans and 27C for people doing minimal physical activity. www.pnas.org/doi/10.1073/...
Abstract
Recent projections suggest that large geographical areas will soon experience heat and humidity exceeding limits for human thermoregulation. The survivability limits modeled in that research were based on laboratory studies suggesting that humans cannot effectively thermoregulate in wet bulb temperatures (Twb) above 26 to 31 °C, values considerably lower than the widely publicized theoretical threshold of 35 °C. The newly proposed empirical limits were derived from the Twb corresponding to the core temperature inflection point in participants exposed to stepped increases in air temperature or relative humidity in a climate-controlled chamber. Despite the increasing use of these thermal-step protocols, their validity has not been established. We used a humidity-step protocol to estimate the Twb threshold for core temperature inflection in 12 volunteers. To determine whether this threshold truly demarcates the Twb above which thermoregulation is impossible, each participant was subsequently exposed to Twb above (~33.7 °C, Tabove) and below (~30.9 °C, Tbelow) their respective inflection point (~32.3 °C, Twb) for up to 9 h (in random order). Core temperature rose continuously in Tabove. It was projected that core temperatures associated with heat stroke (40.2 °C) would occur within 10 h. While Tbelow was also uncompensable, the core temperature rate of rise was considerably lower than in Tabove such that it would take >24 h to reach 40.2 °C. Our study supports thermal-step protocols as an effective technique for evaluating survivability limits for heat exposure and provides a direct assessment of the limits of human thermoregulation.
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Soemano Zeijlmans @soemanozeijlmans.eu · 08/04/2025
How has the left bar changed since the US has crippled its foreign aid agency?
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Hank Green @hankgreen.bsky.social · 07/04/2025
A tricky thing about modern society is that no one has any idea when they don’t die. Like, the number of lives saved by controlling air pollution in America is probably over 200,000 per year, but the number of people who think their life was saved by controlling air pollution is zero.
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De Correspondent @decorrespondent.nl · 01/04/2025
Twee jaar geleden had correspondent Simon van Teutem een contract van consultancybureau McKinsey in handen — een heilige graal voor talloze ambitieuze leeftijdsgenoten. Een paar jaar buffelen, vertelde hij zichzelf, om daarna iets echt betekenisvols te doen voor de wereld.
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Soemano Zeijlmans @soemanozeijlmans.eu · 05/04/2025
LinkedInfluencers are posting about how AI image generation can lead to false receipts. But no-one is talking about the real problem: how AI can create fake LinkedIn posts about these receipts. Will AI replace LinkedIn influencers? 🤔
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Andrew Dessler @andrewdessler.com · 30/03/2025
Climate economists: Does any economist think that economic model estimates of good enough that they should guide our policy response? e.g., "economic models predict GDP declines of a few percent in 2100 from 3C of warming, so we don't need to work hard to avoid this."
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Soemano Zeijlmans @soemanozeijlmans.eu · 25/03/2025
Hoe lang van tevoren hebben jullie deze woordgrap al bedacht?
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Soemano Zeijlmans @soemanozeijlmans.eu · 08/03/2025
Volgens mij kan dat zijn omdat nieuwe gebruikers denken dat hun contacten niet op Signal zitten omdat ze geen actieve gesprekken hebben. Iets van een nudge om het "nieuw bericht"-scherm te openen help vast met retentie! (2/2)
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Soemano Zeijlmans @soemanozeijlmans.eu · 08/03/2025
Als ik nog een toevoeging mag doen: ik zie vaak een popup van een contact dat een account heeft aangemaakt en dan wordt het dezelfde dag verwijderd. (1/2)
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Giving Green @givinggreen.earth · 07/03/2025
🚨 We're #hiring! 🚨 📌 #Research Associate/Senior Researcher to drive evidence-based #climate giving 📌 Experts to support projects in #biodiversity & #PuertoRico climate landscape 🔗 Apply: tinyurl.com/46xb2dzk 📩 Questions/interest: givinggreen@idinsight.org Boost & tag!
tinyurl.com
Careers | Giving Green
The latest climate career opportunities with Giving Green.
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Soemano Zeijlmans @soemanozeijlmans.eu · 08/03/2025
Inderdaad. Ik heb stickerpakketten of individuele stickers die ik op WhatsApp kan gebruiken, maar op Signal heb je ze dan niet. Een simpele manier om die te importeren zou fijn zijn!
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Soemano Zeijlmans @soemanozeijlmans.eu · 06/03/2025
Polls! En een manier om de rare stickerpakketten van mijn vriendengroep te importeren.
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Soemano Zeijlmans @soemanozeijlmans.eu · 27/02/2025
it's a bop
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Rutger Bregman @rutgerbregman.com · 25/02/2025
The blood that Elon Musk and his DOGE-cronies have on their hands because of the PEPFAR Funding Suspension. 200.000+ people not getting their daily HIV medication. 15.000+ deaths and counting.
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Soemano Zeijlmans @soemanozeijlmans.eu · 26/02/2025
Meanwhile, the actual EA community is fuming about the PEPFAR cuts and has set up an emergency fund to continue coverage. Elon is a just a loser who likes to act quirky. He found EA cool once because of the tech nerds but ultimately found out that nazism is a much better fit for him.
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Soemano Zeijlmans @soemanozeijlmans.eu · 26/02/2025
every ea hates musk man cmon what kind of strawman is this? Hard to be an effective altruist if you're not an altruist to begin with
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Soemano Zeijlmans @soemanozeijlmans.eu · 22/02/2025
Similar for the beautifully decorated buses in Guatemala! They're often decorated with something representing the destination(s) they serve.
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Ruben Dieleman @dieleman.bsky.social · 17/02/2025
This has been on my mind a lot, recently: What if climate change will get much worse than we think? Find the @effectiveenvironmentalism.org article here, in our latest newsletter. 🗞️ effectiveenvironmentalism.substack.com/p/what-if-cl...
effectiveenvironmentalism.substack.com
What if climate change will get much worse than we think?
There is a non-negligible chance that climate change will be catastrophic. We need to be prepared. Also: exciting opportunities, interesting articles, and hot takes!
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Margriet Oostveen @moostveen.bsky.social · 17/02/2025
Veel berichten over de opkomst van populistisch rechts gaan over manieren om kiezers op andere gedachten te brengen: alsof alleen zíj moeten veranderen. Terwijl je ook de gevolgen van je eigen hoogopgeleide positie eens wat vaker zou kunnen onderzoeken. Mijn eerste stuk voor @decorrespondent.nl
decorrespondent.nl
In Holland staat een zuil: hoe hoogopgeleiden zich steeds meer afzonderen van de rest van Nederland
In een halve eeuw groeide het aantal hoogopgeleiden in Nederland explosief. Daarnaast isoleren zij zich steeds meer: eigen sportclubs, eigen scholen, eigen media, eigen wijken. Deze ‘verzuiling’ blijf...
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Soemano Zeijlmans @soemanozeijlmans.eu · 15/02/2025
Inb4 Haptamu de Hoop partijleider linkse partij? 🫣
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Soemano Zeijlmans @soemanozeijlmans.eu · 09/02/2025
The @signal.org app is now the most downloaded app in NL! Let's ditch WhatsApp and chat securely :) signal.org/install
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Soemano Zeijlmans @soemanozeijlmans.eu · 06/02/2025
Portland, Oregon!
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Simon van Teutem @simonvanteutem.bsky.social · 05/02/2025
Wonderbaarlijk dat elk nieuwsmedium dat ik tot nu toe heb gezien de term 'etnische zuivering' vermijdt in de kop en de lead over Trumps uitdrukkelijke voorstel tot etnische zuivering. www.nrc.nl/nieuws/2025/...
nrc.nl
Het plan om van Gaza een Amerikaanse kustplaats te maken schokt de regio
Gaza: De suggestie van de Amerikaanse president Trump om de Gazastrook vrij van Palestijnen te maken om het door de VS te laten ontwikkelen tot Riviera, kan een eind aan het bestand tussen Israël en H...
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Soemano Zeijlmans @soemanozeijlmans.eu · 05/02/2025
Tellen specials ook, @grotepodcastlas.bsky.social? (En kunnen jullie raden waar dit is?)
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Ken Opalo @kopalo.bsky.social · 05/02/2025
Ethnic cleansing is bad.
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Soemano Zeijlmans @soemanozeijlmans.eu · 30/01/2025
Con mucho gusto! Conocéis mas perfiles sobre altruismo eficaz en español?
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Soemano Zeijlmans @soemanozeijlmans.eu · 30/01/2025
Ping @effectiveenvironmentalism.org for inclusion in the newsletter
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Soemano Zeijlmans @soemanozeijlmans.eu · 30/01/2025
@effectiveenvironmentalism.org
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Soemano Zeijlmans @soemanozeijlmans.eu · 30/01/2025
@mixrogers.bsky.social road traffic charity inspo 😍
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Brigid ag Rithallaigh @brigidagrith.bsky.social · 29/01/2025
A good reminder that cycle lanes and footpaths don't appear congested as they (mostly) allow people to move through quickly and efficiently. Video taken from charlemont luas stop on a rainy morning.
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Soemano Zeijlmans @soemanozeijlmans.eu · 29/01/2025
Musk is not an altruist, let alone an effective one. Don't conflate the ideas of some rich racist pricks with the wider EA movement please! They don't represent the countless people that are working to abolish factory farming, stop climate change, end poverty, or keep AI from becoming too powerful.
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Hannah Ritchie @hannahritchie.bsky.social · 28/01/2025
More than 20 million people receive treatment for HIV through PEPFAR, the US Aid Relief Program. This is being rolled back, and doing so will cost many lives.
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Soemano Zeijlmans @soemanozeijlmans.eu · 28/01/2025
@frissewindnu.bsky.social 👀
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Soemano Zeijlmans @soemanozeijlmans.eu · 27/01/2025
uBlock Origin has a filter list to block this stuff!
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Soemano Zeijlmans @soemanozeijlmans.eu · 27/01/2025
Hey @bitsoffreedom.bsky.social, jullie zouden je handle kunnen verifiëren als extra verificatie! Duurt nog geen minuut als je toegang hebt tot je DNS instellingen.
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