Louise Hidinger, PhD
@theingredientslist.bsky.social
Founder, Clean Indoor Air Toronto Science Communications & Strategy www.cleanindoorairto.ca Science communications + Sustainable design Ph.D. biological chemistry + AAS fashion design Twitter/X @IngredientsbyL #scicomm #cleanindoorair
With huge thanks to the 190 people who've donated so far, we're now at $17,375, which is 35% of the way to our $50K legal defence goal! At this pace, we need about 350 more people to give. Read about the case and how to support.
The Grind Is Being Sued By an IDF Reservist Soldier
This defamation case could sink one of the only publications closely covering the Palestine solidarity movement in Toronto and the repression it has faced. We need your help…
thegrindmag.ca
This was a hard won gain that took a tremendous amount of work, determination, & persistence. Thanks to everyone on the Clean Indoor Air Toronto team, and thanks to OSPE!
Dick Zoutman@dickzoutman.bsky.social · last wk.This 👇🏽 is terrific news! Now we need to replicate this across all of Ontario and Canada!!
Pleased & proud to share this news! Taking action on #IndoorAirQuality will put @toronto.ca at the forefront of cities taking action. #IAQ is essential for climate resilience! #cleanair #cleanindoorairto ospe.on.ca/advocacy/a-m...
A Major Win for Indoor Air Quality: Toronto's Board of Health Moves to Adopt Stronger Ventilation Standards
The Ontario Society of Professional Engineers celebrates a major win for indoor air quality with stronger ventilation standards in Toronto.
ospe.on.ca
Join Clean Indoor Air Toronto for a FREE workshop on indoor air quality & climate resilience! 📍 Swansea Town Hall, 95 Lavinia Ave 🗓️July 11, 2:30 pm RSVP: bit.ly/cleanair_jul... In partnership with Green 13, supported by Meridian, sponsored by Swansea Town Hall. #IAQ #cleanair
Join Clean Indoor Air Toronto for a FREE workshop on indoor air quality & climate resilience! 📍 Swansea Town Hall, 95 Lavinia Ave 🗓️July 11, 2:30 pm RSVP: bit.ly/cleanair_jul... In partnership with Green 13, supported by Meridian, sponsored by Swansea Town Hall. #IAQ #cleanair
Join Clean Indoor Air Toronto for a FREE workshop on indoor air quality & climate resilience, part of #TorontoClimateWeek! 📍 North York Central Library, Rm 101 🗓 Sunday, June 7 ⏰ 1:00 PM – 2:30 PM RSVP: luma.com/r3l9 *Not a Toronto Public Library event
Join Clean Indoor Air Toronto for a FREE workshop on indoor air quality & climate resilience, part of #TorontoClimateWeek! 📍 North York Central Library, Rm 101 🗓 Sunday, June 7 ⏰ 1:00 PM – 2:30 PM RSVP: luma.com/r3l9 *Not a Toronto Public Library event
Pls sign. Petition calling on federal gov’t 🇨🇦 to say no to jets on #Toronto waterfront. www.ourcommons.ca/petitions/en...
Advocates fighting to save National pharmacare program the health minister says will expire https://www.cbc.ca/news/canada/newfoundland-labrador/nl-national-pharmacare-concerns-9.7192395 @cbcnews.ca ↷ canadahealthwatch.ca/featured 🍁
OUR NEW BMJ editorial: Andes virus should reset WHO’s default approach to airborne risk. 🧵 1/ For severe pathogens with person-to-person transmission, the starting point should be precautionary airborne protections — not waiting for definitive proof after spread occurs. www.bmj.com/content/393/...
bmj.com
Thank you @chrismoise.ca for this meeting, and thank @debbiekingphp.bsky.social for joining us!! We at Clean Indoor Air Toronto are excited about next steps to advance indoor air quality! #IAQ #CleanAir
Debbie King@debbiekingphp.bsky.social · 4mo agoGood indoor air quality is essential to whole health. I met with @cleanairto.bsky.social advocates and the Board of Health Chair to discuss practical steps to improve air in shared spaces—building on recent progress and a 2023 motion I advanced with colleagues at the TDSB. #CleanAirTO #PublicHealth
Since measles is coming back, here's a question: What is the "half-life" of airborne decay of measles? Answer: We have no idea. People think it's long (1 to 2 hours). Why don't we know? Funders largely felt there wasn't a need to measure it since it was managed with vaccines.
Amazing that this review paper from 2021 just became my most cited paper of my 30+ yr career. I am honored to have been the lead first co-corresponding author with @ChiaWang8. COVID is indeed airborne--as are most other respiratory viruses. @ucsandiego.bsky.social www.science.org/doi/full/10....
Airborne transmission of respiratory viruses
A Review discusses the scientific basis of and factors controlling airborne transmission of respiratory viruses including coronavirus.
science.org
Here's an easy way to select a minimum clean air delivery rate (CADR) when you're shopping for a portable air cleaner (filter). For example, if my room is 15 ft x 12 ft = 180 sq ft, then I'd want a CADR of at least 120 CFM (cubic feet per minute).
Dustin Poppendieck @poppendieck.bsky.social · 7mo agoHow do you select an appropriately sized portable air cleaner for a room? TLDR: Imperial Units: CADR (in CFM) = 2/3 Floor Area (ft2) Metric Units: CADR (in m3/h) = Volume (m3) * 4.4
Help let the feds know we need them to step up now to protect the Canada Healthcare Act - a source of great pride in Canada. ‼️Deadline to sign is Jan. 16, 4:00pm!‼️ www.ourcommons.ca/petitions/en... #MakeYourNoise #NoTo2TierCare /fin
ourcommons.ca
Adopting Health Canada’s indoor air quality guidelines would significantly improve public health while strengthening accessibility and climate resilience across Toronto. I encourage residents to join @CleanIndoorAirTO and tell the City you support a healthier, future-ready Toronto. bit.ly/ciatodec25
Toronto Board of Health Advocacy-CIATO
We have over 750 signatures, help us get to our next goal of 800! Join Clean Indoor Air Toronto in sending a clear message to the City of Toronto that you want a city that’s healthier, more accessib...
bit.ly
We’re over 600 signatures, hoping to get to 1000 before the Board of Health meets Monday. You don’t need to live in Toronto to sign! #topoli #cleantheair
Sara@sarablue.bsky.social · 8mo agoHey Toronto! Like to breathe clean, safe air? Me too! Please read and sign this petition to the Board of Health asking for better indoor air quality guidelines! 🌬️🍃 #topoli
❤️Open to all signatories❤️ Deadline Jan 12 Petition to adopt Health🇨🇦's new IAQ Guidance: bsky.app/profile/mama... No IAQ policy at any level of govt ensuring indoor air is clean & safe to breathe atm Clean air for kids & staff in schools & daycares shouldn’t be controversial 🙏✍️&share Thank you
TorontoBikeMama@mamatoronto.bsky.social · 8mo agoClean air for kids & staff in schools & daycares shouldn’t be controversial No IAQ policy at any level of govt ensuring indoor air is clean & safe to breathe atm Petition to Toronto Board of Health to direct TO Public Health to adopt Health🇨🇦's new IAQ Guidance preview.mailerlite.io/preview/1297...
also, we have covid and influenza still causing outbreaks on hospital units. Unforced error! We should have near-zero or zero Hospital-acquired infections. Respiratory infections (including influenza and COVID) are predominantly spread by airborne means 10/
Masks work! respirator masks work even better. If you are vulnerable wear a mask to protect yourself. If you are sick, wear a mask, or better yet stay at home and avoid making your fellow citizens sick as well. 8/
We need a Christmas miracle. Please sign and share! 👇👇👇 #CleanAir for all!
TorontoBikeMama@mamatoronto.bsky.social · 7mo agoAll I want for Christmas if for my kid to breathe clean air at school, for adults to get why that’s important, & take steps to make it so Clean air for kids & staff in schools & daycares shouldn’t be controversial If you agree, please sign & share! bsky.app/profile/mama... Thank you! 1/
SARS-CoV-2 is so dangerous precisely because of its insidious nature. Its propensity to continually re-infect. The superficial similarity of the symptoms it causes to those of other common viruses. The unseen risk of sequelae. That wretched molecular shark tricks almost everyone.
After the devastating loss of the 3 children in Ottawa, it was urgent to get info out re the additional ways avail to protect one’s loved ones from serious illness as we enter the holidays… and to remind young fams this amt of sickness ISN’T normal. #VaccinePlus ottawa.citynews.ca/2025/12/21/s...
Schools have become cesspools for cold and flu, but they don't have to be: Ontario School Safety
The volunteer organization Ontario School Safety is calling on the provincial government to improve air quality in schools as flu spreads.
ottawa.citynews.ca
Join Clean Indoor Air Toronto in sending a clear message to the City of Toronto that you want a city that’s healthier, more accessible, and better prepared for the future! Tell the Board of Health to direct Toronto Public Health to take steps to adopt Health Canada’s new guidelines for indoor air.
Toronto Board of Health Advocacy-CIATO
Join Clean Indoor Air Toronto in sending a clear message to the City of Toronto that you want a city that’s healthier, more accessible, and better prepared for the future! Tell the Board of Health to...
docs.google.com
Join Clean Indoor Air Toronto in sending a clear message to City of Toronto that you want a city that’s healthier, more accessible, & better prepared for the future! Tell the Board of Health to direct Toronto Public Health to take steps to adopt Health Canada’s new IAQ guidance. bit.ly/ciatodec25
Toronto Board of Health Advocacy-CIATO
We have over 315 signatures, help us get to our next goal of 325! Join Clean Indoor Air Toronto in sending a clear message to the City of Toronto that you want a city that’s healthier, more accessib...
bit.ly
The way to read the Canada-Alberta MOU is that Carney is using the Trump effect as political cover to pursue the deregulatory agenda he’s long wanted. I spoke with @naomiaklein.bsky.social who called it a classic example of the shock doctrine.
Did the climate world misread Carney?
Many in the climate movement saw a fellow traveller in Mark Carney — the man who could preach climate action in the language of finance — but what if they were wrong from the very start?
nationalobserver.com
“Right now, we’re in the thick of COVID-19. We know that COVID-19 is actively circulating in our province…it’s been increasing since late summer” No kidding. It's gross NS Health didn't warn people sooner. And, hand-washing doesn't prevent airborne spread. Please wear a mask & get vaccinated.
Nova Scotia Health says COVID-19 infections on the rise
Nova Scotia Health says there's been an uptick in COVID-19 cases.
ctvnews.ca
Tara Moriarty@moriartylab.bsky.social · 9mo agoCanadian COVID Forecast: Oct 25 - Nov 7, 2025 SEVERE: NB, NS, SK VERY HIGH: CAN, AB, BC, MB, NL, North, ON, PEI HIGH: QC MODERATE: none About 1 in 126 people in Canada are CURRENTLY infected.
