Soemano Zeijlmans's Avatar

Soemano Zeijlmans

@soemanozeijlmans.eu.bsky.social

πŸ’Š Welfare-pilled utility maximizer πŸ” Environmental economist building a better world with evidence instead of vibes. πŸ’š Research Associate at Giving Green 🌍 Co-director of @EffectiveEnvironmentalism.org πŸŽ’ Offbeat travel, nature, connections. πŸƒβ€β™‚οΈ Running

85 Followers  |  97 Following  |  47 Posts  |  Joined: 21.11.2024  |  2.4533

Latest posts by soemanozeijlmans.eu on Bluesky

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We’re flying the nest! πŸ¦‹ 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 πŸ’š

Learn more: tinyurl.com/yc5eyvx6

06.10.2025 16:20 β€” πŸ‘ 5    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
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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.

🌿 How can #philanthropy best support #biodiversity?

Our latest consulting project will explore:

πŸ’Έ The philanthropic opportunity
🏞️ 2 focus areas: land use change & wild species exploitation
πŸ’ͺThe top biodiversity nonprofits

πŸ”— More here: tinyurl.com/yc3u5ze6

02.07.2025 22:30 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

The latest EE newsletter is fresh in your inboxes!

02.07.2025 08:50 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

🌳 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 πŸ—žοΈ
- Some great job openings and opportunities! πŸ”­

Check it out!πŸ‘‡

06.06.2025 20:42 β€” πŸ‘ 1    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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Accelerate Climate Innovations Β· 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…

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

21.05.2025 10:19 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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πŸ‘©πŸΌβ€πŸ”¬The scientific ecosystemβ€”especially around cultivated meatβ€”reported major breakthroughs in 2024, and faster than expected.

Download the full report πŸ‘‰ bit.ly/4jVLSEF

Look below for a few highlights that shaped 2024 ‡️

16.05.2025 18:42 β€” πŸ‘ 6    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0

"Angry person yells at subway wall."

17.05.2025 08:34 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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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.

As GFI's @emmaiggie.bsky.social explains, Avian flu outbreaks like the one we're experiencing now are not a fluke β€” 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...

21.04.2025 15:17 β€” πŸ‘ 9    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
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 Β°C, values considerably lower than the widely publicized theoretical threshold of 35 Β°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 Β°C, Tabove) and below (~30.9 Β°C, Tbelow) their respective inflection point (~32.3 Β°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 Β°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 Β°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.

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 Β°C, values considerably lower than the widely publicized theoretical threshold of 35 Β°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 Β°C, Tabove) and below (~30.9 Β°C, Tbelow) their respective inflection point (~32.3 Β°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 Β°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 Β°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.

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/...

08.04.2025 20:09 β€” πŸ‘ 394    πŸ” 164    πŸ’¬ 21    πŸ“Œ 5

How has the left bar changed since the US has crippled its foreign aid agency?

08.04.2025 18:49 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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.

07.04.2025 04:13 β€” πŸ‘ 63201    πŸ” 13075    πŸ’¬ 1088    πŸ“Œ 585
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Twee jaar geleden had correspondent Simon van Teutem een contract van consultancybureau McKinsey in handen β€” een heilige graal voor talloze ambitieuze leeftijdsgenoten. Een paar jaar buffelen, vertelde hij zichzelf, om daarna iets echt betekenisvols te doen voor de wereld.

01.04.2025 08:46 β€” πŸ‘ 12    πŸ” 2    πŸ’¬ 1    πŸ“Œ 1
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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? πŸ€”

05.04.2025 17:55 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

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."

30.03.2025 19:11 β€” πŸ‘ 24    πŸ” 3    πŸ’¬ 13    πŸ“Œ 0

Hoe lang van tevoren hebben jullie deze woordgrap al bedacht?

25.03.2025 15:07 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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)

08.03.2025 17:23 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

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)

08.03.2025 17:23 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Careers | Giving Green The latest climate career opportunities with Giving Green.

🚨 We're #hiring! 🚨

πŸ“Œ #Research Associate/Senior Researcher to drive evidence-based #climate giving
πŸ“Œ Experts to support projects in #biodiversity & #PuertoRico climate landscape

πŸ”— Apply: tinyurl.com/46xb2dzk
πŸ“© Questions/interest: givinggreen@idinsight.org

Boost & tag!

07.03.2025 17:48 β€” πŸ‘ 2    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0

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!

08.03.2025 06:23 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Polls!
En een manier om de rare stickerpakketten van mijn vriendengroep te importeren.

06.03.2025 17:26 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

it's a bop

27.02.2025 16:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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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.

25.02.2025 19:25 β€” πŸ‘ 505    πŸ” 221    πŸ’¬ 6    πŸ“Œ 8

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.

26.02.2025 01:12 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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

26.02.2025 00:39 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Similar for the beautifully decorated buses in Guatemala! They're often decorated with something representing the destination(s) they serve.

22.02.2025 18:20 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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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!

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. πŸ—žοΈ

effectiveenvironmentalism.substack.com/p/what-if-cl...

17.02.2025 11:43 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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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 β€˜verzuiling’ blijf...

Veel berichten over de opkomst van populistisch rechts gaan over manieren om kiezers op andere gedachten te brengen: alsof alleen zΓ­j moeten veranderen.
Terwijl je ook de gevolgen van je eigen hoogopgeleide positie eens wat vaker zou kunnen onderzoeken.

Mijn eerste stuk voor @decorrespondent.nl

17.02.2025 06:31 β€” πŸ‘ 243    πŸ” 62    πŸ’¬ 75    πŸ“Œ 25

Inb4 Haptamu de Hoop partijleider linkse partij? 🫣

15.02.2025 10:37 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The @signal.org app is now the most downloaded app in NL! Let's ditch WhatsApp and chat securely :)
signal.org/install

09.02.2025 20:37 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Portland, Oregon!

06.02.2025 13:24 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

@soemanozeijlmans.eu is following 20 prominent accounts