John Wenger
@johnwenger9.bsky.social
Professor of Chemistry
University College Cork
Atmospheric scientist, clean air advocate
University College Cork
Atmospheric scientist, clean air advocate
Cork needs more green spaces. Sign the petition to turn a derelict site into a park.
🚨 Petition: Turn the O Sullivans Quay derelict site into the only city centre public park
"Please consider signing this petition. I have had a motion before Cork City Council that this happen."
- Cllr Dan Boyle
"Please consider signing this petition. I have had a motion before Cork City Council that this happen."
- Cllr Dan Boyle
Sign the Petition
Turn the O Sullivans Quay derelict site into the only city centre public park
www.change.org
November 24, 2025 at 4:12 PM
Cork needs more green spaces. Sign the petition to turn a derelict site into a park.
This all sounds too familiar...government agency stating bird flu is not airborne despite evidence to the contrary.
NEW: We traced out a devastating outbreak of bird flu to its source: an egg farm in Ohio. Where the wind blew, the virus followed.
Within weeks, the farms downwind were about 20 times as likely to see outbreaks as those that weren’t.
Within weeks, the farms downwind were about 20 times as likely to see outbreaks as those that weren’t.
What the U.S. Government Is Dismissing That Could Seed a Bird Flu Pandemic
Egg producers suspect bird flu is traveling through the air. After a disastrous Midwestern outbreak early this year, we tested that theory and found that where the wind blew, the virus followed. Vaccines could help, but the USDA hasn’t approved them.
www.propublica.org
November 18, 2025 at 10:59 PM
This all sounds too familiar...government agency stating bird flu is not airborne despite evidence to the contrary.
This is just miserable...
Nothing is safe trom Trump:
The Buddy Holly crosswalk in his hometown of Lubbock, Texas will be removed to comply with a directive from the Trump regime to rid the public roadways of any political messages or artwork.
The Buddy Holly crosswalk in his hometown of Lubbock, Texas will be removed to comply with a directive from the Trump regime to rid the public roadways of any political messages or artwork.
Buddy Holly crosswalk in his Texas hometown to be removed following order on road safety
“It’s such a tasteful cross section and people like it. But what do you do?” City Council Member Christy Martinez-Garcia said of the crosswalk that depicts Holly's iconic glasses.
www.nbcnews.com
November 15, 2025 at 8:01 PM
This is just miserable...
Reposted by John Wenger
We thought it would be fun to run a campaign to share your air quality readings using #FridayAirday on Fridays! Help us create awareness of the importance of indoor/outdoor air quality by capturing an image of your CO2 monitor in whatever contexts you want to share. Some examples below. #CleanTheAir
November 13, 2025 at 9:28 PM
We thought it would be fun to run a campaign to share your air quality readings using #FridayAirday on Fridays! Help us create awareness of the importance of indoor/outdoor air quality by capturing an image of your CO2 monitor in whatever contexts you want to share. Some examples below. #CleanTheAir
What a great range of activities planned by @greenschoolsire.bsky.social for Clean Air Week!
Specially designed challenges & activities for primary & secondary schools.
I am pleased to contribute in a small way to the programme content.
@antaisce.bsky.social
greenschoolsireland.org/clean-air-we...
Specially designed challenges & activities for primary & secondary schools.
I am pleased to contribute in a small way to the programme content.
@antaisce.bsky.social
greenschoolsireland.org/clean-air-we...
Clean Air Week 2025
The aim of the Marine Spatial Planning Photo Competition is to find out how you would like to see our ocean and marine environments being used in the future.
greenschoolsireland.org
November 11, 2025 at 6:43 PM
What a great range of activities planned by @greenschoolsire.bsky.social for Clean Air Week!
Specially designed challenges & activities for primary & secondary schools.
I am pleased to contribute in a small way to the programme content.
@antaisce.bsky.social
greenschoolsireland.org/clean-air-we...
Specially designed challenges & activities for primary & secondary schools.
I am pleased to contribute in a small way to the programme content.
@antaisce.bsky.social
greenschoolsireland.org/clean-air-we...
Reposted by John Wenger
COVID-19 remains unrecognised as an occupational illness in Ireland. The argument is that it's too difficult to prove an infection source, as COVID-19 is so pervasive in our communities. This is an admission of failure and not a justifiable excuse. #cleantheair #cleanairforall
November 3, 2025 at 10:33 AM
COVID-19 remains unrecognised as an occupational illness in Ireland. The argument is that it's too difficult to prove an infection source, as COVID-19 is so pervasive in our communities. This is an admission of failure and not a justifiable excuse. #cleantheair #cleanairforall
Reposted by John Wenger
I've finally got around to curating a selection of films about the #climate crisis 🎥
There's lot of mediocre climate films out there, but for me these stand out head & shoulders above the rest 🎞️
They make excellent resources for classrooms, lecture halls, or community cinema's 🎬
Thread:🧵Plz RT
There's lot of mediocre climate films out there, but for me these stand out head & shoulders above the rest 🎞️
They make excellent resources for classrooms, lecture halls, or community cinema's 🎬
Thread:🧵Plz RT
November 1, 2025 at 10:17 AM
I've finally got around to curating a selection of films about the #climate crisis 🎥
There's lot of mediocre climate films out there, but for me these stand out head & shoulders above the rest 🎞️
They make excellent resources for classrooms, lecture halls, or community cinema's 🎬
Thread:🧵Plz RT
There's lot of mediocre climate films out there, but for me these stand out head & shoulders above the rest 🎞️
They make excellent resources for classrooms, lecture halls, or community cinema's 🎬
Thread:🧵Plz RT
Great thread on societal questioning around science.
Key message for me is that the burden of proof lies with the challengers and not with those in mainstream science where things like man-made climate change are proven and widely accepted by the experts.
Key message for me is that the burden of proof lies with the challengers and not with those in mainstream science where things like man-made climate change are proven and widely accepted by the experts.
“Science is never settled” sounds reasonable—but it’s often a rhetorical trick to undermine consensus on issues like vaccines or climate change.
Science evolves, but some things are overwhelmingly supported by evidence.
My latest for Live Science
www.livescience.com/...
1/10
Science evolves, but some things are overwhelmingly supported by evidence.
My latest for Live Science
www.livescience.com/...
1/10
There is such a thing as 'settled science' — anyone who says otherwise is trying to manipulate you
How bad-faith arguments sow doubt by weaponizing scientific humility.
www.livescience.com
October 28, 2025 at 11:40 PM
Great thread on societal questioning around science.
Key message for me is that the burden of proof lies with the challengers and not with those in mainstream science where things like man-made climate change are proven and widely accepted by the experts.
Key message for me is that the burden of proof lies with the challengers and not with those in mainstream science where things like man-made climate change are proven and widely accepted by the experts.
Nice to see our TownAir project covered in the @independent.ie
We installed a low cost sensor network in Enniscorthy, a town in Ireland with a history of wintertime air pollution.
The network shows how pollution from solid fuel burning varies across the town
www.independent.ie/regionals/we...
We installed a low cost sensor network in Enniscorthy, a town in Ireland with a history of wintertime air pollution.
The network shows how pollution from solid fuel burning varies across the town
www.independent.ie/regionals/we...
Air quality monitors installed in Enniscorthy after years of alarming air pollution
A network of air quality monitors have been installed around Enniscorthy town as part of a UCC and University of Galway research project on emissions called TownAir.
www.independent.ie
October 23, 2025 at 10:44 AM
Nice to see our TownAir project covered in the @independent.ie
We installed a low cost sensor network in Enniscorthy, a town in Ireland with a history of wintertime air pollution.
The network shows how pollution from solid fuel burning varies across the town
www.independent.ie/regionals/we...
We installed a low cost sensor network in Enniscorthy, a town in Ireland with a history of wintertime air pollution.
The network shows how pollution from solid fuel burning varies across the town
www.independent.ie/regionals/we...
A home fire might look nice and feel cozy but wood burning costs lives and the economy.
www.theguardian.com/environment/...
www.theguardian.com/environment/...
Wood burners linked to 2,500 deaths a year in the UK, analysis finds
Use of wood-burning stoves and fires in homes is mostly unnecessary and their toxic pollution costs the NHS millions
www.theguardian.com
October 23, 2025 at 6:49 AM
A home fire might look nice and feel cozy but wood burning costs lives and the economy.
www.theguardian.com/environment/...
www.theguardian.com/environment/...
Really looking forward to meeting old and new colleagues at the Aerosol Society Conference in York next week.
I'll be talking about our air pollution research and how it informed the recent updates to the solid fuel regulations in Ireland.
@uccresearch.bsky.social @epaireland.bsky.social
@ucc.ie
I'll be talking about our air pollution research and how it informed the recent updates to the solid fuel regulations in Ireland.
@uccresearch.bsky.social @epaireland.bsky.social
@ucc.ie
Come along to the annual UK and Ireland Aerosol Society Conference in the beautiful Guildhall in York on the 28th-29th October. Lots of exciting talks and keynotes from Hugh Coe, @johnwenger9.bsky.social and @chiaragiorio.bsky.social
aerosol-soc.com/events/annua...
aerosol-soc.com/events/annua...
October 21, 2025 at 12:51 PM
Really looking forward to meeting old and new colleagues at the Aerosol Society Conference in York next week.
I'll be talking about our air pollution research and how it informed the recent updates to the solid fuel regulations in Ireland.
@uccresearch.bsky.social @epaireland.bsky.social
@ucc.ie
I'll be talking about our air pollution research and how it informed the recent updates to the solid fuel regulations in Ireland.
@uccresearch.bsky.social @epaireland.bsky.social
@ucc.ie
From Wales...Even more evidence to show that...
Lower speed limits for road vehicles in urban areas = less road injuries, less pollution and lower insurance costs.
Reducing urban speed limits to 30 km/h is a no-brainer from a policy perspective.
www-bbc-co-uk.cdn.ampproject.org/c/s/www.bbc....
Lower speed limits for road vehicles in urban areas = less road injuries, less pollution and lower insurance costs.
Reducing urban speed limits to 30 km/h is a no-brainer from a policy perspective.
www-bbc-co-uk.cdn.ampproject.org/c/s/www.bbc....
Nearly 900 fewer people injured since 20mph introduction in Wales - BBC News
Figures show a 25% reduction in the number of injuries on Wales' roads in the past 18 months.
www-bbc-co-uk.cdn.ampproject.org
October 9, 2025 at 9:59 PM
From Wales...Even more evidence to show that...
Lower speed limits for road vehicles in urban areas = less road injuries, less pollution and lower insurance costs.
Reducing urban speed limits to 30 km/h is a no-brainer from a policy perspective.
www-bbc-co-uk.cdn.ampproject.org/c/s/www.bbc....
Lower speed limits for road vehicles in urban areas = less road injuries, less pollution and lower insurance costs.
Reducing urban speed limits to 30 km/h is a no-brainer from a policy perspective.
www-bbc-co-uk.cdn.ampproject.org/c/s/www.bbc....
The lack of fresh air on airplanes increases the risk of infection from covid and other airborne diseases. Wear a decent respirator on flights and other forms of transport, e.g. long bus/train journeys, for protection.
I am concerned about the poor air quality apparent inside aeroplane cabins, which are after all workplaces (for cabin crew and pilots).
I was on a Ryanair flight ex-Bari (Puglia/Apulia) last Wednesday and as always, when I am on-board a plane, I monitor the carbon dioxide concentration in the
I was on a Ryanair flight ex-Bari (Puglia/Apulia) last Wednesday and as always, when I am on-board a plane, I monitor the carbon dioxide concentration in the
Code of Practice for Indoor Air Quality
The Code of Practice is implemented through S.I. No. 255/2023 - Safety, Health and Welfare at Work (General Application) (Amendment) Regulations 2023.
tinyurl.com
October 3, 2025 at 11:49 PM
The lack of fresh air on airplanes increases the risk of infection from covid and other airborne diseases. Wear a decent respirator on flights and other forms of transport, e.g. long bus/train journeys, for protection.
Reposted by John Wenger
Here I am in 2020 in the flimsiest, most pitful PPE - like so many other NHS staff, some of whom died from the Covid they caught in their hospitals.
Tory peer Michelle Mone - who today lost her legal case & must repay the govt £122m - dares to claim she’s been ‘scapegoated’.
What, Michelle? 🧵
Tory peer Michelle Mone - who today lost her legal case & must repay the govt £122m - dares to claim she’s been ‘scapegoated’.
What, Michelle? 🧵
October 1, 2025 at 12:22 PM
Here I am in 2020 in the flimsiest, most pitful PPE - like so many other NHS staff, some of whom died from the Covid they caught in their hospitals.
Tory peer Michelle Mone - who today lost her legal case & must repay the govt £122m - dares to claim she’s been ‘scapegoated’.
What, Michelle? 🧵
Tory peer Michelle Mone - who today lost her legal case & must repay the govt £122m - dares to claim she’s been ‘scapegoated’.
What, Michelle? 🧵
Reposted by John Wenger
We have a new PhD project to study ozone formation from fires. If interested in atmospheric chemistry, fires, living in Zurich, and studying at ETH, consider applying here: jobs.ethz.ch/job/view/JOP...
PhD Position in Atmospheric Chemistry
jobs.ethz.ch
September 30, 2025 at 8:08 AM
We have a new PhD project to study ozone formation from fires. If interested in atmospheric chemistry, fires, living in Zurich, and studying at ETH, consider applying here: jobs.ethz.ch/job/view/JOP...
Reposted by John Wenger
Here is the link to Tess' article.
Plz click the paid link to show Indo we care.
Free link in next tweet.
“Immunity debt” is not a thing.
Our children need protection from immune damage!
Children are sicker now than pre-pandemic
We must clean classroom air.
www.independent.ie/opinion/comm...
Plz click the paid link to show Indo we care.
Free link in next tweet.
“Immunity debt” is not a thing.
Our children need protection from immune damage!
Children are sicker now than pre-pandemic
We must clean classroom air.
www.independent.ie/opinion/comm...
Tess Finch-Lees: Forever-Covid hurts young people’s health – and their futures
Two years ago, I reported on a study finding that the coronavirus contributed to the 2022 surge of paediatric RSV cases “through the large build-up of Covid-19-infected children and the potential lon...
www.independent.ie
September 24, 2025 at 1:16 PM
Here is the link to Tess' article.
Plz click the paid link to show Indo we care.
Free link in next tweet.
“Immunity debt” is not a thing.
Our children need protection from immune damage!
Children are sicker now than pre-pandemic
We must clean classroom air.
www.independent.ie/opinion/comm...
Plz click the paid link to show Indo we care.
Free link in next tweet.
“Immunity debt” is not a thing.
Our children need protection from immune damage!
Children are sicker now than pre-pandemic
We must clean classroom air.
www.independent.ie/opinion/comm...
Today is World Ozone Day.
Atmospheric scientists identified the chemicals destroying stratospheric ozone and made recommendations that politicians followed.
As a result the ozone layer is recovering.
This science success story is a valuable lesson for dealing with climate change.
Atmospheric scientists identified the chemicals destroying stratospheric ozone and made recommendations that politicians followed.
As a result the ozone layer is recovering.
This science success story is a valuable lesson for dealing with climate change.
The ozone hole was real. The danger was global.
World leaders acted together, and the ozone layer is healing.
This World Ozone Day, we celebrate what science and cooperation can achieve. 🌍
#WorldOzoneDay #GlobalAction
@unep.org @bas.ac.uk
World leaders acted together, and the ozone layer is healing.
This World Ozone Day, we celebrate what science and cooperation can achieve. 🌍
#WorldOzoneDay #GlobalAction
@unep.org @bas.ac.uk
September 16, 2025 at 6:47 PM
Today is World Ozone Day.
Atmospheric scientists identified the chemicals destroying stratospheric ozone and made recommendations that politicians followed.
As a result the ozone layer is recovering.
This science success story is a valuable lesson for dealing with climate change.
Atmospheric scientists identified the chemicals destroying stratospheric ozone and made recommendations that politicians followed.
As a result the ozone layer is recovering.
This science success story is a valuable lesson for dealing with climate change.
The ongoing impact of COVID-19...
In my experience, the general public often don't understand the extent to which critical infrastructure systems rely on very small groups of highly-trained individuals.
In addition, some of these controllers will have lingering cognitive effects.
7news.com.au/news/covid-o...
In addition, some of these controllers will have lingering cognitive effects.
7news.com.au/news/covid-o...
COVID outbreak blamed for Sydney Airport chaos
A COVID wave through Sydney Airport's control tower has left airlines furious and passengers stranded.
7news.com.au
September 13, 2025 at 4:40 PM
The ongoing impact of COVID-19...
Reposted by John Wenger
In my experience, the general public often don't understand the extent to which critical infrastructure systems rely on very small groups of highly-trained individuals.
In addition, some of these controllers will have lingering cognitive effects.
7news.com.au/news/covid-o...
In addition, some of these controllers will have lingering cognitive effects.
7news.com.au/news/covid-o...
COVID outbreak blamed for Sydney Airport chaos
A COVID wave through Sydney Airport's control tower has left airlines furious and passengers stranded.
7news.com.au
September 13, 2025 at 10:15 AM
In my experience, the general public often don't understand the extent to which critical infrastructure systems rely on very small groups of highly-trained individuals.
In addition, some of these controllers will have lingering cognitive effects.
7news.com.au/news/covid-o...
In addition, some of these controllers will have lingering cognitive effects.
7news.com.au/news/covid-o...
Reposted by John Wenger
The UK and Ireland Annual Aerosol Society meeting in in York on 28th-28th October. Abstract submission is open. Come along to this great meeting, with some excellent plenary speakers @johnwenger9.bsky.social @chiaragiorio.bsky.social and Hugh Coe
aerosol-soc.com/events/annua...
aerosol-soc.com/events/annua...
Annual Aerosol Science Conference 2025 - The Aerosol Society
aerosol-soc.com
September 10, 2025 at 2:27 PM
The UK and Ireland Annual Aerosol Society meeting in in York on 28th-28th October. Abstract submission is open. Come along to this great meeting, with some excellent plenary speakers @johnwenger9.bsky.social @chiaragiorio.bsky.social and Hugh Coe
aerosol-soc.com/events/annua...
aerosol-soc.com/events/annua...
Reposted by John Wenger
Our letter about poor indoor air quality in schools was published in the @irishtimes.com today.
Illness is the leading cause of school absence: To reduce the number of school-acquired infections, we must address indoor air quality as an absolute priority.
www.irishtimes.com/opinion/lett...
Illness is the leading cause of school absence: To reduce the number of school-acquired infections, we must address indoor air quality as an absolute priority.
www.irishtimes.com/opinion/lett...
Poor air quality in classrooms
‘Illness continues to be the leading cause of school absences’
www.irishtimes.com
September 4, 2025 at 11:30 AM
Our letter about poor indoor air quality in schools was published in the @irishtimes.com today.
Illness is the leading cause of school absence: To reduce the number of school-acquired infections, we must address indoor air quality as an absolute priority.
www.irishtimes.com/opinion/lett...
Illness is the leading cause of school absence: To reduce the number of school-acquired infections, we must address indoor air quality as an absolute priority.
www.irishtimes.com/opinion/lett...
Reposted by John Wenger
One week left to apply - are you passionate about #AirPollution and #SchoolStreets? Come and work with our small, friendly team and be our next Schools Lead! More details at the link - deadline 7th September. www.linkedin.com/jobs/view/42...
August 31, 2025 at 4:01 PM
One week left to apply - are you passionate about #AirPollution and #SchoolStreets? Come and work with our small, friendly team and be our next Schools Lead! More details at the link - deadline 7th September. www.linkedin.com/jobs/view/42...
Overheard in the Stags Head, Dublin yesterday...
Young man: "Apparently this was Michael Collins' favourite pub in Dublin"
Young lady: "Yeah, my gran has a picture of him on the wall, next to Jesus"
#speirgorm #spéirgorm
Young man: "Apparently this was Michael Collins' favourite pub in Dublin"
Young lady: "Yeah, my gran has a picture of him on the wall, next to Jesus"
#speirgorm #spéirgorm
August 24, 2025 at 12:19 PM
Overheard in the Stags Head, Dublin yesterday...
Young man: "Apparently this was Michael Collins' favourite pub in Dublin"
Young lady: "Yeah, my gran has a picture of him on the wall, next to Jesus"
#speirgorm #spéirgorm
Young man: "Apparently this was Michael Collins' favourite pub in Dublin"
Young lady: "Yeah, my gran has a picture of him on the wall, next to Jesus"
#speirgorm #spéirgorm
Reposted by John Wenger
What's #airpollution like where you live?
Check out new pollution maps and data story from my colleagues @imperialcollegeldn.bsky.social
storymaps.arcgis.com/stories/cc8a...
Check out new pollution maps and data story from my colleagues @imperialcollegeldn.bsky.social
storymaps.arcgis.com/stories/cc8a...
The CMAQ-Urban air pollution model
Modelling air pollution at fine resolution across the UK
storymaps.arcgis.com
July 30, 2025 at 1:02 PM
What's #airpollution like where you live?
Check out new pollution maps and data story from my colleagues @imperialcollegeldn.bsky.social
storymaps.arcgis.com/stories/cc8a...
Check out new pollution maps and data story from my colleagues @imperialcollegeldn.bsky.social
storymaps.arcgis.com/stories/cc8a...