LET'S AIR
@nousaerons.bsky.social
News, scientific mediation and infographics on ventilation & indoor air quality.
letsair.org
letsair.org
Pinned
LET'S AIR
@nousaerons.bsky.social
· Feb 14
You can find the 30 or so infographics in PDF format on our website: letsair.org
These mediation elements are regularly used for scientific, associative or political actions. We keep them up to date with the feedback we receive.
These mediation elements are regularly used for scientific, associative or political actions. We keep them up to date with the feedback we receive.
We would like to remind you that our guide on airborne diseases and prevention methods is available in English, French, German, and Arabic at: letsair.org#mediation. It's the result of multidisciplinary work involving physicians, pulmonologists, aerosol scientists, engineers...
November 28, 2025 at 6:54 AM
We would like to remind you that our guide on airborne diseases and prevention methods is available in English, French, German, and Arabic at: letsair.org#mediation. It's the result of multidisciplinary work involving physicians, pulmonologists, aerosol scientists, engineers...
Reliable, inexpensive and simple to use, these are our 4 favorite CO2 monitors. They have certainly helped prevent many cases of flu, COVID-19, Whooping cough etc. The list of airborne diseases is long! letsair.org
November 25, 2025 at 8:44 AM
Reliable, inexpensive and simple to use, these are our 4 favorite CO2 monitors. They have certainly helped prevent many cases of flu, COVID-19, Whooping cough etc. The list of airborne diseases is long! letsair.org
New research paper: this is the first study to assess indoor pollutants and their concentration in schools in the Madrid region. Levels of CO2, PM 2.5 and VOCs exceeding the currently recommended thresholds were found.
analesdepediatria.org/es-descripti...
analesdepediatria.org/es-descripti...
November 24, 2025 at 10:46 AM
New research paper: this is the first study to assess indoor pollutants and their concentration in schools in the Madrid region. Levels of CO2, PM 2.5 and VOCs exceeding the currently recommended thresholds were found.
analesdepediatria.org/es-descripti...
analesdepediatria.org/es-descripti...
Is your space well ventilated? Ask JaspAir, our CO2 monitor penguin.
Work and fundraising efforts continue around this prototype, which many teachers would like to have in their classrooms, and we are delighted about that. And JaspAir too.
Work and fundraising efforts continue around this prototype, which many teachers would like to have in their classrooms, and we are delighted about that. And JaspAir too.
November 21, 2025 at 10:23 AM
Is your space well ventilated? Ask JaspAir, our CO2 monitor penguin.
Work and fundraising efforts continue around this prototype, which many teachers would like to have in their classrooms, and we are delighted about that. And JaspAir too.
Work and fundraising efforts continue around this prototype, which many teachers would like to have in their classrooms, and we are delighted about that. And JaspAir too.
On Nov. 4 & 5, @uconn.bsky.social and K12 students participated in lessons that involved them in building Corsi-Rosenthal air purifiers. Once the purifiers are built, every district's classroom will be equipped with one and their impact will be studied.👍
www.coventrypublicschools.org/news-details...
www.coventrypublicschools.org/news-details...
UConn Air Quality Initiative
News Details - Coventry Public Schools
www.coventrypublicschools.org
November 20, 2025 at 10:45 AM
On Nov. 4 & 5, @uconn.bsky.social and K12 students participated in lessons that involved them in building Corsi-Rosenthal air purifiers. Once the purifiers are built, every district's classroom will be equipped with one and their impact will be studied.👍
www.coventrypublicschools.org/news-details...
www.coventrypublicschools.org/news-details...
Meeting in the JaspAir family to discuss the lack of interest from decision-makers in funding a real-life experiment despite many motivated and enthusiastic teachers wanting to install a CO2 monitor in their classrooms. The family members remain determined to help the children.
November 17, 2025 at 10:17 AM
Meeting in the JaspAir family to discuss the lack of interest from decision-makers in funding a real-life experiment despite many motivated and enthusiastic teachers wanting to install a CO2 monitor in their classrooms. The family members remain determined to help the children.
JaspAir, our CO2 monitor, will be monitoring the indoor air renewal in this classroom all day and will indicate when to open the windows. He wishes you a good day.
More information at letsair.org/jaspair
More information at letsair.org/jaspair
November 14, 2025 at 7:52 AM
JaspAir, our CO2 monitor, will be monitoring the indoor air renewal in this classroom all day and will indicate when to open the windows. He wishes you a good day.
More information at letsair.org/jaspair
More information at letsair.org/jaspair
JaspAir is becoming simpler, more robust, and faster to manufacture. But there is still work to be done before it can be given to teachers for testing in classrooms. To follow the project: letsair.org/jaspair.
November 13, 2025 at 4:44 PM
JaspAir is becoming simpler, more robust, and faster to manufacture. But there is still work to be done before it can be given to teachers for testing in classrooms. To follow the project: letsair.org/jaspair.
Given the interest in JaspAir (Jasper), our CO2 monitor, we have published the technical information for manufacturing it. This can be done in a fab-lab. We are continuing to improve JaspAir for widespread testing. Any suggestion or help is welcome.
letsair.org/jaspair
letsair.org/jaspair
JaspAir
JaspAir, the CO2 monitor
letsair.org
November 10, 2025 at 7:21 PM
Given the interest in JaspAir (Jasper), our CO2 monitor, we have published the technical information for manufacturing it. This can be done in a fab-lab. We are continuing to improve JaspAir for widespread testing. Any suggestion or help is welcome.
letsair.org/jaspair
letsair.org/jaspair
Reposted by LET'S AIR
When classrooms have cleaner air, children focus better, miss fewer days, and they breathe easier 🌿
We’re proud to deliver air filters to 200+ London schools through the @london.gov.uk’s #SchoolFiltersProgramme with WSP UK, Mango Logistics & @walkwheelcyclet.bsky.social.
👉 bit.ly/4oUeXma
We’re proud to deliver air filters to 200+ London schools through the @london.gov.uk’s #SchoolFiltersProgramme with WSP UK, Mango Logistics & @walkwheelcyclet.bsky.social.
👉 bit.ly/4oUeXma
November 10, 2025 at 10:00 AM
When classrooms have cleaner air, children focus better, miss fewer days, and they breathe easier 🌿
We’re proud to deliver air filters to 200+ London schools through the @london.gov.uk’s #SchoolFiltersProgramme with WSP UK, Mango Logistics & @walkwheelcyclet.bsky.social.
👉 bit.ly/4oUeXma
We’re proud to deliver air filters to 200+ London schools through the @london.gov.uk’s #SchoolFiltersProgramme with WSP UK, Mango Logistics & @walkwheelcyclet.bsky.social.
👉 bit.ly/4oUeXma
Over 200 teachers WW are interested in testing Jasper, our CO2 monitor; see the requests by country below. We are delighted by the interest and positive feedback - thanks ! - but we have limited resources and will not be able to fulfill all requests. We will keep you updated.
November 10, 2025 at 8:16 AM
Over 200 teachers WW are interested in testing Jasper, our CO2 monitor; see the requests by country below. We are delighted by the interest and positive feedback - thanks ! - but we have limited resources and will not be able to fulfill all requests. We will keep you updated.
We are looking for teachers willing to test Jasper, a CO2 monitor in their classrooms. Jasper is a prototype and we would like to receive user feedback as soon as possible from several countries. If you are interested, please fill out the form: letsair.org/jasper
November 7, 2025 at 11:28 AM
We are looking for teachers willing to test Jasper, a CO2 monitor in their classrooms. Jasper is a prototype and we would like to receive user feedback as soon as possible from several countries. If you are interested, please fill out the form: letsair.org/jasper
Jasper monitors the quality of air renewal in this classroom.
November 7, 2025 at 9:19 AM
Jasper monitors the quality of air renewal in this classroom.
This is Jasper, our CO2 monitor, designed for schools, nurseries and anyone who loves penguins and cares about good indoor air renewal.
November 5, 2025 at 6:15 AM
This is Jasper, our CO2 monitor, designed for schools, nurseries and anyone who loves penguins and cares about good indoor air renewal.
Achieving good indoor air renewal is possible with a properly sized mechanical ventilation system. An appropriate occupancy rate then allows CO2 levels to be kept very low, thus ensuring excellent comfort and health safety.
November 4, 2025 at 8:17 AM
Achieving good indoor air renewal is possible with a properly sized mechanical ventilation system. An appropriate occupancy rate then allows CO2 levels to be kept very low, thus ensuring excellent comfort and health safety.
For those who are curious, here's what's inside our Jasper prototype. It's simple, inexpensive, and very reliable.
November 4, 2025 at 7:30 AM
For those who are curious, here's what's inside our Jasper prototype. It's simple, inexpensive, and very reliable.
Jasper, our CO2 monitor, is a valuable tool for classrooms and childare. The color of its belly shows the quality of indoor air renewal. Additional technical details are available on the screen at the back. Easy to use, it offers a truly outstanding cost–benefit ratio.
November 3, 2025 at 10:46 AM
Jasper, our CO2 monitor, is a valuable tool for classrooms and childare. The color of its belly shows the quality of indoor air renewal. Additional technical details are available on the screen at the back. Easy to use, it offers a truly outstanding cost–benefit ratio.
On one side, Jasper, our CO2 monitor, lights up its belly to indicate whether the indoor air renewal of the room is sufficient; on the other side, it gives the measured CO2 level and the corresponding Air-Score.
November 2, 2025 at 6:47 PM
On one side, Jasper, our CO2 monitor, lights up its belly to indicate whether the indoor air renewal of the room is sufficient; on the other side, it gives the measured CO2 level and the corresponding Air-Score.
Photo of the day: Jasper's family, our CO2 monitor, is growing.
October 31, 2025 at 12:20 PM
Photo of the day: Jasper's family, our CO2 monitor, is growing.
Work on Jasper's casing is underway. Jasper is really adorable and very popular, isn't he?
October 30, 2025 at 12:42 PM
Work on Jasper's casing is underway. Jasper is really adorable and very popular, isn't he?
The indoor air quality at the Parisian theater "Studio Marigny" is poor. However, it is still far below the levels recorded in some classrooms where CO2 levels sometimes exceed 3000 ppm. Our CO2 measurements taken at various locations are available at letsair.org#monitoring
October 30, 2025 at 10:06 AM
The indoor air quality at the Parisian theater "Studio Marigny" is poor. However, it is still far below the levels recorded in some classrooms where CO2 levels sometimes exceed 3000 ppm. Our CO2 measurements taken at various locations are available at letsair.org#monitoring
To grab attention when the air in a room needs to be renewed, Jasper — our CO₂ monitor — flashes its belly red.
October 29, 2025 at 10:03 AM
To grab attention when the air in a room needs to be renewed, Jasper — our CO₂ monitor — flashes its belly red.
We continue to work on Jasper, our CO2 monitor, to make it simpler and cheaper to produce.
October 27, 2025 at 4:23 PM
We continue to work on Jasper, our CO2 monitor, to make it simpler and cheaper to produce.
A tiny device is identifying invisible health hazards in Boston schools - @bostonschools.boston.gov is using a nation-leading network of air quality sensors to improve classroom air.
www.bostonglobe.com/2025/10/26/s...
www.bostonglobe.com/2025/10/26/s...
A tiny device is identifying invisible health hazards in Boston schools - The Boston Globe
Boston Public Schools is using a nation-leading network of air quality sensors to improve classroom air.
www.bostonglobe.com
October 27, 2025 at 6:18 AM
A tiny device is identifying invisible health hazards in Boston schools - @bostonschools.boston.gov is using a nation-leading network of air quality sensors to improve classroom air.
www.bostonglobe.com/2025/10/26/s...
www.bostonglobe.com/2025/10/26/s...
Jasper, our CO2 monitor, measures the quality of indoor air renewal. When you press its beak, it announces the measured CO2 level. The green color of its belly indicates excellent renewal. Jasper was created by students from the French engineering school CentraleSupelec.
October 21, 2025 at 1:06 PM
Jasper, our CO2 monitor, measures the quality of indoor air renewal. When you press its beak, it announces the measured CO2 level. The green color of its belly indicates excellent renewal. Jasper was created by students from the French engineering school CentraleSupelec.