Aurel Wünsch

@aurel.indoorco2map.com

Hier privat zu Energie | Emissionen | Digitalisierung | Covid | Arbeitet bei der Prognos AG | In my free time I work on http://indoorco2map.com (there is also a discord server for it: https://discord.gg/9FqE7wna4D )

Started to go down the rabbit hole of looking at books on ventilation and building regulations from before 1910 and even just starting out, I have a hunch that the droplet dogma caused a century of building+operating most indoor spaces the wrong way, while pre-1910 ventilation was high priority.

I don't really mind whether it is birds or people for the new euro bills but those 2 designs which are portrait-mode bills are evoking very strong opinions in me. What's next after that? Instagram-style square bills?

European Commission@ec.europa.eu · 2w ago

What will the next euro banknotes look like? 🇪🇺💶 @ecb.europa.eu has shortlisted 10 designs, selected from over 1,200 proposals by graphic designers across Europe. Now it's your turn to pick your favourite. 👇 surveys.ecb.europa.eu/10b/neweuro/ *Survey available in the 24 EU languages.

So about this AI doing some hacking stuff it wasn't supposed to do. I'm less worried about an AI which needs high end hardware to run - sure such thing might cause quite a bit of damage but is containable - I expect the first major incident is going to be a small low-capability model which can 1/2

Uff, ich verstehe ja, dass einige mittlerweile frustriert sind. Aber unter Aufrufe sich politisch gegen Abbau von Sozialleistungen & Rückbau von Transparenz zu engagieren „bringt ja eh nix…“ zu kommentieren macht echt rein gar nichts besser. Es ist vielmehr Teil des Problems.

Arztpraxen gehören schon jetzt mit zu den Orten an denen die Luftqualität am schlechtesten ist und das Infektionsrisiko dadurch höher. Wenn da jetzt alle für ihre AU hinmüssen wird es noch ärger (und kurze AUs sind oft auch Atemwegsbedingt). Die Änderung wird zu mehr, nicht weniger Fehltagen führen

Stacked bar chart of indoor CO₂ distribution by GO IAQS air quality category. Bars show % of locations in each category per group, sorted best to worst. Data: 3.587 locations · 9.154 visits shown · 14 location types (most frequently measured). Filters: Germany; all location types; Apr 11, 2024–Jul 2, 2026. doityourself: Good 92.4%, Moderate 7.6%, Unhealthy 0.0%. clothes: Good 85.0%, Moderate 11.9%, Unhealthy 3.1%. fast_food: Good 82.6%, Moderate 15.1%, Unhealthy 2.3%. furniture: Good 82.4%, Moderate 17.6%, Unhealthy 0.0%. mall: Good 79.6%, Moderate 19.4%, Unhealthy 1.0%. pharmacy: Good 74.7%, Moderate 24.1%, Unhealthy 1.1%. museum: Good 72.5%, Moderate 20.9%, Unhealthy 6.6%. bakery: Good 70.1%, Moderate 27.8%, Unhealthy 2.1%. chemist: Good 58.2%, Moderate 38.4%, Unhealthy 3.4%. cinema: Good 55.8%, Moderate 32.6%, Unhealthy 11.6%. cafe: Good 54.6%, Moderate 31.9%, Unhealthy 13.5%. restaurant: Good 51.7%, Moderate 34.0%, Unhealthy 14.3%. doctors: Good 34.7%, Moderate 49.4%, Unhealthy 15.9%. supermarket: Good 31.0%, Moderate 57.3%, Unhealthy 11.7%.
Janosch Dahmen@janoschdahmenmdb.de · last mo.

Während Union und SPD das Gesundheitswesen mit ihrem GKV-Sparkurs in den Würgegriff nehmen, beschließen sie im #Koalitionsausschuss ein neues Bürokratieprogramm: Schluss mit der telefonischen Krankschreibung, AU ab Tag 1. Millionen unnötige Arztbesuche statt besserer Versorgung.

11. Beschluss Koalitionsausschuss SPD & Union: Die telefonische Krankschreibung wird abgeschafft und die unrichtige Ausstellung einer Arbeitsunfähigkeitsbescheinigung nach § 278 StGB stärker bestraft. Wir führen eine verpflichtende Vorlage der AU-Bescheinigung ab dem ersten Tag der Erkrankung sowie im Rahmen der Umsetzung des Primärarztgesetzes eine „Termingarantie Fachärzte" ein. Darüber hinaus etablieren wir eine gesetzlich geregelte Infarktvorsorge.

They are doing something very important: put serious money behind clean indoor air. That is very good news and there is a high likelyhood this will result in advancements to this neglected field, but I think they could have an even bigger impact with some changes So I wrote a short Essay on it:

Blog — Indoor CO₂ Atlas

indoorco2map.com

Linsey Marr@linseymarr.bsky.social · last mo.

We treat respiratory infections like the cold and flu as minor nuisances. The evidence increasingly suggests they’re anything but. I'm excited to be an advisor for Intercept, a $500M bet to make them a thing of the past. interceptfund.substack.com/p/e9438538-4...

They are doing something very important: put serious money behind clean indoor air. That is very good news and there is a high likelyhood this will result in advancements to this neglected field, but I think they could have an even bigger impact with some changes So I wrote a short Essay on it:

Blog — Indoor CO₂ Atlas

indoorco2map.com

Linsey Marr@linseymarr.bsky.social · last mo.

We treat respiratory infections like the cold and flu as minor nuisances. The evidence increasingly suggests they’re anything but. I'm excited to be an advisor for Intercept, a $500M bet to make them a thing of the past. interceptfund.substack.com/p/e9438538-4...

communities are coming to Bluesky this year. today, Bluesky is one big space. communities will be smaller spaces inside that where you can go deeper and hang out with people who care about the same stuff.

I've been a broken record on this for three years and I'll be a broken record for as long as that fucking website exists: X is a viciously racist far-right organising platform that ONLY WORKS because a huge number of centrists, lefties and progressivs cannot stop propping it up

Elon Musk accused of fuelling unrest after Belfast knife attack

The use of social media in planning violent protests over the Belfast knife attack has drawn condemnation, with Britain's ruling Labour Party accusing Elon Musk of stoking divisions. The tech billiona...

yahoo.com

Bibliotheken sind auch deshalb gute Ortezum lernen weil sie größtenteils gute Luftqualität haben (sample Size ist noch nicht die größte für die Kategorie aber die Bisherigen Messungen sind doch sehr ermutigend)

Histogram of indoor CO₂ distribution (location count per CO₂ bin, bin size: 200 ppm). Filters: Germany; Libraries; Apr 11, 2024–Jun 7, 2026. Data: 53 locations · 116 visits. 400–600 ppm: 14 locations; 600–800 ppm: 25 locations; 800–1000 ppm: 6 locations; 1000–1200 ppm: 4 locations; 1200–1400 ppm: 3 locations; 1400–1600 ppm: 0 locations; 1600–1800 ppm: 1 location; 1800–2000 ppm: 0 locations; 2000–2200 ppm: 0 locations; 2200–2400 ppm: 0 locations; 2400–2600 ppm: 0 locations; 2600–2800 ppm: 0 locations; 2800–3000 ppm: 0 locations; 3000+ ppm: 0 locations.Screenshot einer Messung der Zentralbibliothek im KAP1 in Düsseldorf von August 2025 mit einem durchschnittlichen CO2-Wert von 547ppm
Stephan Schwering 🏳️‍🌈@stpnlibrarian.bsky.social · 2mo ago

Wusstet ihr, dass viele Menschen in #Bibliotheken gar keine Bücher ausleihen? Sie kommen zum Lernen, Arbeiten, Treffen oder einfach zum Durchatmen. Und genau dafür sind wir auch da - willkommen in der neuen Woche. #DritterOrt

Added 2 new chart types to the analysis page in addition to the boxplots. These convey the Information way better on first glance than boxplots I think. And the more I use the GO IAQS(tandard) from @goaqs.bsky.social, the more I am convinced that 3 categorys are enough to provide an overview

Stacked bar chart of indoor CO₂ distribution by GO IAQS air quality category. Bars show % of locations in each category per group, sorted best to worst. Data: 6.427 locations · 14.249 visits shown · 15 location types (most frequently measured). Filters: all countries; all location types; Apr 11, 2024–May 24, 2026. doityourself: Good 93.4%, Moderate 6.6%, Unhealthy 0.0%. fast_food: Good 81.4%, Moderate 16.5%, Unhealthy 2.0%. clothes: Good 79.7%, Moderate 18.4%, Unhealthy 1.9%. mall: Good 75.5%, Moderate 23.6%, Unhealthy 0.9%. pharmacy: Good 71.5%, Moderate 26.1%, Unhealthy 2.4%. museum: Good 70.3%, Moderate 25.3%, Unhealthy 4.4%. convenience: Good 69.9%, Moderate 26.4%, Unhealthy 3.7%. bakery: Good 68.7%, Moderate 27.9%, Unhealthy 3.4%. Other: Good 67.2%, Moderate 29.0%, Unhealthy 3.8%. chemist: Good 60.4%, Moderate 36.6%, Unhealthy 3.0%. hotel: Good 60.2%, Moderate 35.2%, Unhealthy 4.5%. restaurant: Good 58.1%, Moderate 32.0%, Unhealthy 9.9%. cafe: Good 57.8%, Moderate 33.1%, Unhealthy 9.1%. supermarket: Good 36.2%, Moderate 54.6%, Unhealthy 9.2%. doctors: Good 31.9%, Moderate 53.1%, Unhealthy 15.0%.Strip chart of indoor CO₂ levels  by brand. Each dot represents one measurement, coloured by GO IAQS air quality category (Good <800 ppm, Moderate 800–1400 ppm, Unhealthy >1400 ppm). Vertical bar marks median per group. Data: 1.446 locations · 4.410 visits shown · 12 brands (most frequently measured). Filters: Germany; Supermarkets; Apr 11, 2024–May 24, 2026. Konsum Leipzig (n=36): median 729 ppm. Kaufland (n=65): median 788 ppm. EDEKA (n=238): median 852 ppm. Unknown / Independent (n=116): median 853 ppm. NORMA (n=50): median 885 ppm. Denns BioMarkt (n=37): median 888 ppm. REWE (n=286): median 925 ppm. PENNY (n=75): median 977 ppm. Netto Marken-Discount (n=131): median 1003 ppm. ALDI Nord (n=99): median 1033 ppm. Lidl (n=180): median 1218 ppm. ALDI Süd (n=133): median 1243 ppm.
Aurel Wünsch@aurel.indoorco2map.com · 3mo ago

I added some new features to the analysis page. One of them is the ability to generate social-media-ready images of the charts - including ALT-text. I also added an (by default enabled) option to adjust all measurements to local time - which makes more sense when comparing across continents than UTC

A few notes on allgemeines Wohlbefinden, Supplements und das regulierte Nervensystem (kleine Samstagmorgen-Rant): Ich sehe immer häufiger, dass Feminist*innen oder Aktivist*innen für chronische Krankheit und/oder Behinderung Nahrungsergänzungsmittel und Lifestylemaßnahmen unkritisch bewerben, 1/

The Zooniverse projects are among the most impressive citizen science projects. While I didn't think consciously about it when I created indoorco2map.com all the hours I spend at the Galaxy Zoo, Old Weather and Solar Stormwatch projects might have been what made me believe it is worth the effort

Indoor-CO₂ Atlas

indoorco2map.com

Zooniverse@zooniverse.bsky.social · 3mo ago

We are counting down to 1 billion classifications on Zooniverse! www.zooniverse.org/about - watch it live.

On Tuesday I was at the "High-Level Dialogue on Health Indoor Air," held as a side event of the World Health Assembly (WHA, sort of the WHO’s General Assembly). One of the organisers’ main goals is to prepare a WHO resolution targeting better indoor health and get it passed at the WHA in 2028.

Aurel Wünsch@aurel.indoorco2map.com · 3mo ago

One of the many great things about the Indoor Air Quality Meetings I attended so far is that there actually is good air quality, just open Doors are often enough to achieve that. 470ppm is just barely above baseline levels. And having a screen promin placed is a great communication tool.

A photo of the panel at the World Health Assembly High-Level dialogue on Healthy Indoor Air which shows a large display with various Indoor Air Quality parameters of the room. CO2 is at 471ppm

One of the many great things about the Indoor Air Quality Meetings I attended so far is that there actually is good air quality, just open Doors are often enough to achieve that. 470ppm is just barely above baseline levels. And having a screen promin placed is a great communication tool.

A photo of the panel at the World Health Assembly High-Level dialogue on Healthy Indoor Air which shows a large display with various Indoor Air Quality parameters of the room. CO2 is at 471ppmPhoto of the open doors at the venue towards the balcony