I can not stress this enough:
1) The Telegraph misrepresents our paper (“inactivate within an hour”)
2) They claim this discredits the zero-covid community
3) They ignore our much more impactful follow-up article that contradicts their claim
1) The Telegraph misrepresents our paper (“inactivate within an hour”)
2) They claim this discredits the zero-covid community
3) They ignore our much more impactful follow-up article that contradicts their claim
December 21, 2025 at 10:49 PM
One of the reasons why I go so hard on science misinformation/disinformation, is that as a working scientist it is frustrating to see your research misreported to push an agenda.
For example, consider this piece of right-wing propaganda from The Telegraph that was just published
For example, consider this piece of right-wing propaganda from The Telegraph that was just published
December 20, 2025 at 11:38 PM
To be clear, we do not report what Mattha claims. 95% is not 100%. While most of the virus will be inactivated in an hour, not all. At no point do we say otherwise. To imply that we measured 100% inactivation in an hour is wrong (aka: a lie).
Also, FYI: an hour is a long time.
Also, FYI: an hour is a long time.
December 21, 2025 at 7:16 PM
Wow, thanks so much for making sure to go after the nutty nutcases who don’t like the idea of getting sick over and over with a virus we don’t understand. We appreciate it!
Here’s the author of the paper you cited rightly calling your writing “right wing garbage.”
bsky.app/profile/ukha...
Here’s the author of the paper you cited rightly calling your writing “right wing garbage.”
bsky.app/profile/ukha...
I spoke to the people who continue to shape their lives around avoiding Covid and only breathing ‘clean’ air
‘Refusing to mask during an ongoing pandemic is absolutely violent and it’s undeniably participating in social murder.’
For @telegraph.co.uk
www.telegraph.co.uk/news/2025/12...
‘Refusing to mask during an ongoing pandemic is absolutely violent and it’s undeniably participating in social murder.’
For @telegraph.co.uk
www.telegraph.co.uk/news/2025/12...
Access Restricted
www.telegraph.co.uk
December 22, 2025 at 1:18 AM
Wow, thanks so much for making sure to go after the nutty nutcases who don’t like the idea of getting sick over and over with a virus we don’t understand. We appreciate it!
Here’s the author of the paper you cited rightly calling your writing “right wing garbage.”
bsky.app/profile/ukha...
Here’s the author of the paper you cited rightly calling your writing “right wing garbage.”
bsky.app/profile/ukha...
“Who the heck are YOU?”
“I’m you, but with articulation. And better in every way.”
#StarWarsTheBlackSeries #JediSurvivor #Turgle #CosmicLegions #UkHa
“I’m you, but with articulation. And better in every way.”
#StarWarsTheBlackSeries #JediSurvivor #Turgle #CosmicLegions #UkHa
October 12, 2025 at 1:28 AM
“Who the heck are YOU?”
“I’m you, but with articulation. And better in every way.”
#StarWarsTheBlackSeries #JediSurvivor #Turgle #CosmicLegions #UkHa
“I’m you, but with articulation. And better in every way.”
#StarWarsTheBlackSeries #JediSurvivor #Turgle #CosmicLegions #UkHa
One of the reasons why I go so hard on science misinformation/disinformation, is that as a working scientist it is frustrating to see your research misreported to push an agenda.
For example, consider this piece of right-wing propaganda from The Telegraph that was just published
For example, consider this piece of right-wing propaganda from The Telegraph that was just published
December 21, 2025 at 5:49 AM
One of the reasons why I go so hard on science misinformation/disinformation, is that as a working scientist it is frustrating to see your research misreported to push an agenda.
For example, consider this piece of right-wing propaganda from The Telegraph that was just published
For example, consider this piece of right-wing propaganda from The Telegraph that was just published
December 21, 2025 at 12:14 AM
Not convinced by my comments?
Well then, perhaps you should listen to *the first author of the actual paper*:
bsky.app/profile/ukha...
Well then, perhaps you should listen to *the first author of the actual paper*:
bsky.app/profile/ukha...
One of the reasons why I go so hard on science misinformation/disinformation, is that as a working scientist it is frustrating to see your research misreported to push an agenda.
For example, consider this piece of right-wing propaganda from The Telegraph that was just published
For example, consider this piece of right-wing propaganda from The Telegraph that was just published
December 20, 2025 at 11:05 PM
Not convinced by my comments?
Well then, perhaps you should listen to *the first author of the actual paper*:
bsky.app/profile/ukha...
Well then, perhaps you should listen to *the first author of the actual paper*:
bsky.app/profile/ukha...
To celebrate reaching 500 subscribers on my YouTube channel, I decided to do a “Ask Me Anything About Aerosol, eh” #AMAAAeh. I received a lot of great questions.
bsky.app/profile/ukha...
bsky.app/profile/ukha...
My YouTube channel has reached 500 subscribers!
This is very much appreciated.
To celebrate, I’m going to make my next video a #AMAAA,eh (Ask Me Anything About Aerosol, eh).
This is very much appreciated.
To celebrate, I’m going to make my next video a #AMAAA,eh (Ask Me Anything About Aerosol, eh).
February 23, 2025 at 9:14 AM
To celebrate reaching 500 subscribers on my YouTube channel, I decided to do a “Ask Me Anything About Aerosol, eh” #AMAAAeh. I received a lot of great questions.
bsky.app/profile/ukha...
bsky.app/profile/ukha...
holy, hell man, have some respect for your profession!
the first author of a paper you cite characterized your piece as misinfo/disinfo on this very site. it’s been nearly a full day now, and no apology, let alone response?
address it! have your rag issue a correction!
bsky.app/profile/ukha...
the first author of a paper you cite characterized your piece as misinfo/disinfo on this very site. it’s been nearly a full day now, and no apology, let alone response?
address it! have your rag issue a correction!
bsky.app/profile/ukha...
One of the reasons why I go so hard on science misinformation/disinformation, is that as a working scientist it is frustrating to see your research misreported to push an agenda.
For example, consider this piece of right-wing propaganda from The Telegraph that was just published
For example, consider this piece of right-wing propaganda from The Telegraph that was just published
December 21, 2025 at 5:47 PM
holy, hell man, have some respect for your profession!
the first author of a paper you cite characterized your piece as misinfo/disinfo on this very site. it’s been nearly a full day now, and no apology, let alone response?
address it! have your rag issue a correction!
bsky.app/profile/ukha...
the first author of a paper you cite characterized your piece as misinfo/disinfo on this very site. it’s been nearly a full day now, and no apology, let alone response?
address it! have your rag issue a correction!
bsky.app/profile/ukha...
If you're interested in the discussion around plume dynamics, I wrote a thread about it here that goes into a little bit deeper.
bsky.app/profile/ukha...
bsky.app/profile/ukha...
I received this question, and thought maybe other might have it as well. I thought the easiest way to answer would be to put together a short thread.
bsky.app/profile/mike...
bsky.app/profile/mike...
Do things like high ceilings or open back doors matter? It's basically a theater setup -- stage up front, open doors in the back. And would the risk be primarily if you're unlucky enough to be within X radius of someone or does it normalize across the space? (I'll N95 but deciding where to stand)
August 28, 2025 at 3:02 PM
If you're interested in the discussion around plume dynamics, I wrote a thread about it here that goes into a little bit deeper.
bsky.app/profile/ukha...
bsky.app/profile/ukha...
Dr. Allen Haddrell @ukhadds.bsky.social posted on @bsky.app to debunk @telegraph.co.uk misinterpreting his research published in the Royal Society Journal: bsky.app/profile/ukha... 🧵
One of the reasons why I go so hard on science misinformation/disinformation, is that as a working scientist it is frustrating to see your research misreported to push an agenda.
For example, consider this piece of right-wing propaganda from The Telegraph that was just published
For example, consider this piece of right-wing propaganda from The Telegraph that was just published
January 19, 2026 at 3:58 PM
Dr. Allen Haddrell @ukhadds.bsky.social posted on @bsky.app to debunk @telegraph.co.uk misinterpreting his research published in the Royal Society Journal: bsky.app/profile/ukha... 🧵
One of the reasons why I go so hard on science misinformation/disinformation, is that as a working scientist it is frustrating to see your research misreported to push an agenda.
For example, consider this piece of right-wing propaganda from The Telegraph that was just published
For example, consider this piece of right-wing propaganda from The Telegraph that was just published
December 21, 2025 at 5:47 AM
Study proves what we’ve already know, Elon has turned Twitter into a right wing propaganda fire hose.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
The political effects of X’s feed algorithm - Nature
Among users initially on a chronological feed, 7 weeks of exposure to X’s algorithmic feed in 2023 shifted political attitudes and account-following behaviour in a more conservative direction compared...
www.nature.com
February 21, 2026 at 9:02 AM
Yep. A PhD student uses them during exhalation aerosol measurements. Those are very sensitive measurements to make, so the air needs to be extremely clean (no background).
April 30, 2025 at 10:57 PM
Particulate air pollution has been a problem since we lived in caves.
It took us to the 1990s to figure out why.
The story of how people figured out how air pollution affects us is a long, but interesting, one.
youtu.be/w1FlliwNyfQ
It took us to the 1990s to figure out why.
The story of how people figured out how air pollution affects us is a long, but interesting, one.
youtu.be/w1FlliwNyfQ
Air Pollution and Human Health: A History
YouTube video by Al Haddrell
youtu.be
February 10, 2025 at 2:52 PM
i wouldn't necessarily believe everything UKHA says, but CVS sucks too. a pox on both their houses.
Bob Page gonna Bob Page.
Bob Page gonna Bob Page.
Really? CVS?
You can't see it, but this is my shocked face.
You can't see it, but this is my shocked face.
KU Hospital Authority says CVS stole nearly $62 million in prescription drug savings
The lawsuit alleges CVS secretly kept prescription drug discount savings instead of passing them on to the University of Kansas Hospital Authority. The suit says CVS then terminated its contract when ...
www.kcur.org
May 20, 2026 at 11:19 PM
i wouldn't necessarily believe everything UKHA says, but CVS sucks too. a pox on both their houses.
Bob Page gonna Bob Page.
Bob Page gonna Bob Page.
Hey y'all, great news, Prof Al Haddrell has been posting on Bluesky too! Please give him a follow for all things airborne.
Link to the video he posted today:
bsky.app/profile/ukha...
#IAQ #AirbornePathogens #Science
Link to the video he posted today:
bsky.app/profile/ukha...
#IAQ #AirbornePathogens #Science
There's a lot of confusion surrounding how humidity affects the spread of Covid-19. Why is this? In my latest explainer video, I discuss what is known, and not known.
If you have any questions, please let me know!
youtu.be/WUGUA_1H2Kk
If you have any questions, please let me know!
youtu.be/WUGUA_1H2Kk
Does Relative Humidity Affect the Transmission of SARS-CoV-2?
YouTube video by Al Haddrell
youtu.be
October 6, 2024 at 1:51 AM
Hey y'all, great news, Prof Al Haddrell has been posting on Bluesky too! Please give him a follow for all things airborne.
Link to the video he posted today:
bsky.app/profile/ukha...
#IAQ #AirbornePathogens #Science
Link to the video he posted today:
bsky.app/profile/ukha...
#IAQ #AirbornePathogens #Science
October 12, 2025 at 2:17 PM
I miss salo, borscht, ukha, pelmeni, bliny, beetroot salad, dark rye bread, and that lovely herring in shuba😭😭😭
April 2, 2025 at 4:23 PM
I miss salo, borscht, ukha, pelmeni, bliny, beetroot salad, dark rye bread, and that lovely herring in shuba😭😭😭
Physical interventions will lead to this. I wrote a thread about a paper that discussed this last year.
In short, the estimate of ACH is rarely accurate everywhere in a built space. The average may be correct, but each location can be wildly different.
bsky.app/profile/ukha...
In short, the estimate of ACH is rarely accurate everywhere in a built space. The average may be correct, but each location can be wildly different.
bsky.app/profile/ukha...
CO2 monitors have become popular tools people can use to estimate their indoor air quality.
A new study was recently published that looks into how we can use them to optimise occupancy thresholds and identify problem locations.
Actual practical science!!!
A thread
A new study was recently published that looks into how we can use them to optimise occupancy thresholds and identify problem locations.
Actual practical science!!!
A thread
February 23, 2026 at 9:38 PM
Physical interventions will lead to this. I wrote a thread about a paper that discussed this last year.
In short, the estimate of ACH is rarely accurate everywhere in a built space. The average may be correct, but each location can be wildly different.
bsky.app/profile/ukha...
In short, the estimate of ACH is rarely accurate everywhere in a built space. The average may be correct, but each location can be wildly different.
bsky.app/profile/ukha...
Like particulate matter, asbestos can’t be processed by a macrophage. What makes asbestos unusually harmful is the fiber’s rod-like shape. Often, the rod is too long for a macrophage to fully engulf, leading to the macrophage being impaled.
June 27, 2025 at 6:42 AM
Ukha y helado de pistacho
May 22, 2025 at 12:07 AM
Ukha y helado de pistacho
