Linsey Marr
@linseymarr.bsky.social
Engineering professor at Virginia Tech with expertise in air pollution, airborne microbes, nanotechnology. Avid recreational athlete.
Thanks to Erica Hartmann for leading a newly published paper, "Ten questions concerning indoor dust."
What is it?
Where does it come from?
How does it mediate environmental exposures?
How does it affect chemicals indoors?
www.sciencedirect.com/science/arti...
What is it?
Where does it come from?
How does it mediate environmental exposures?
How does it affect chemicals indoors?
www.sciencedirect.com/science/arti...
November 10, 2025 at 4:56 PM
Thanks to Erica Hartmann for leading a newly published paper, "Ten questions concerning indoor dust."
What is it?
Where does it come from?
How does it mediate environmental exposures?
How does it affect chemicals indoors?
www.sciencedirect.com/science/arti...
What is it?
Where does it come from?
How does it mediate environmental exposures?
How does it affect chemicals indoors?
www.sciencedirect.com/science/arti...
Reposted by Linsey Marr
We are honored to share that @linseymarr.bsky.social of @vtengineering.bsky.social will give the Eighteenth Annual Gaden Lecture. Named after alumnus, former faculty member, department chair, and "father of biochemical engineering" Elmer L. Gaden Jr., it is our most prestigious lecture of the year.
November 6, 2025 at 11:30 PM
We are honored to share that @linseymarr.bsky.social of @vtengineering.bsky.social will give the Eighteenth Annual Gaden Lecture. Named after alumnus, former faculty member, department chair, and "father of biochemical engineering" Elmer L. Gaden Jr., it is our most prestigious lecture of the year.
Evidence continues to accumulate linking exposure to air pollution with dementia. www.nytimes.com/2025/11/01/h...
What the Air You Breathe May Be Doing to Your Brain
www.nytimes.com
November 5, 2025 at 3:26 PM
Evidence continues to accumulate linking exposure to air pollution with dementia. www.nytimes.com/2025/11/01/h...
Reposted by Linsey Marr
Could a “smoke alarm” for airborne contaminants monitor and improve the quality of the air indoors? (Where Americans spend 90 percent of their time!)
An interdisciplinary research team led by @linseymarr.bsky.social will create such a system that could cut respiratory illnesses by 25 percent. 👏
An interdisciplinary research team led by @linseymarr.bsky.social will create such a system that could cut respiratory illnesses by 25 percent. 👏
Up to $40 million in federal funding fuels research to revolutionize clean indoor air
With the contract from the Advanced Research Projects Agency for Health, an interdisciplinary research team led by Virginia Tech and Linsey Marr will create a “smoke alarm” for airborne contaminants t...
news.vt.edu
October 20, 2025 at 8:17 PM
Could a “smoke alarm” for airborne contaminants monitor and improve the quality of the air indoors? (Where Americans spend 90 percent of their time!)
An interdisciplinary research team led by @linseymarr.bsky.social will create such a system that could cut respiratory illnesses by 25 percent. 👏
An interdisciplinary research team led by @linseymarr.bsky.social will create such a system that could cut respiratory illnesses by 25 percent. 👏
Healthy indoor air is a proven prescription for public health that can help fortify our buildings and enhance people’s health, protecting against respiratory diseases and illnesses, cardiovascular disease and cognitive decline.
resources.wellcertified.com/press-releas...
resources.wellcertified.com/press-releas...
October 14, 2025 at 1:03 PM
Healthy indoor air is a proven prescription for public health that can help fortify our buildings and enhance people’s health, protecting against respiratory diseases and illnesses, cardiovascular disease and cognitive decline.
resources.wellcertified.com/press-releas...
resources.wellcertified.com/press-releas...
I have a lot of travel coming up, and it's that time of year, so I just got my flu and COVID shots.
October 10, 2025 at 2:06 PM
I have a lot of travel coming up, and it's that time of year, so I just got my flu and COVID shots.
Glad to have the support of Representative Morgan Griffith for our new ARPA-H BREATHE award @virginiatech.bsky.social!
morgangriffith.house.gov/news/documen...
morgangriffith.house.gov/news/documen...
U.S. Representative Morgan Griffith
“ARPA-H is dedicated to reducing airborne threats to human health.
morgangriffith.house.gov
October 7, 2025 at 8:36 PM
Glad to have the support of Representative Morgan Griffith for our new ARPA-H BREATHE award @virginiatech.bsky.social!
morgangriffith.house.gov/news/documen...
morgangriffith.house.gov/news/documen...
You know Jeff Siegel is in town when he whips out deodorant to see if its terpene emissions react with ozone from my new far-UVC lamps to generate secondary aerosol.
He gave a great seminar about HVAC filter forensics!
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
He gave a great seminar about HVAC filter forensics!
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
October 3, 2025 at 8:35 PM
You know Jeff Siegel is in town when he whips out deodorant to see if its terpene emissions react with ozone from my new far-UVC lamps to generate secondary aerosol.
He gave a great seminar about HVAC filter forensics!
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
He gave a great seminar about HVAC filter forensics!
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Reposted by Linsey Marr
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...
I'm thrilled to be leading, along with AJ Prussin II, an ARPA-H BREATHE team that will integrate new biosensors, risk assessment software, and engineering controls to bring clean and healthy indoor air to more buildings.
arpah.gov/news-and-eve...
arpah.gov/news-and-eve...
BREATHE research teams kick off efforts to enhance indoor air quality to improve health, advance the future of smart buildings
The Advanced Research Projects Agency for Health (ARPA-H) supports transformative research to drive biomedical and health breakthroughs ranging from molecular to societal to provide transformative hea...
arpah.gov
September 29, 2025 at 4:06 PM
I'm thrilled to be leading, along with AJ Prussin II, an ARPA-H BREATHE team that will integrate new biosensors, risk assessment software, and engineering controls to bring clean and healthy indoor air to more buildings.
arpah.gov/news-and-eve...
arpah.gov/news-and-eve...
Reposted by Linsey Marr
Now with update 🙌
September 29, 2025 at 11:11 AM
Now with update 🙌
Influenza A virus RNA found in airborne particles from pigs across a range of particle sizes. For reference a 10 micron particle takes ~8 minutes to settle to the ground from a height of 5 feet. That's plenty of time for it to drift around and be inhaled by others.
September 29, 2025 at 3:41 PM
Influenza A virus RNA found in airborne particles from pigs across a range of particle sizes. For reference a 10 micron particle takes ~8 minutes to settle to the ground from a height of 5 feet. That's plenty of time for it to drift around and be inhaled by others.
National Academies @health.nationalacademies.org Workshop on Personal Protective Equipment for Influenza A (H5N1) in High-Risk Farm Settings happening now at www.nationalacademies.org/event/45411_...
www.nationalacademies.org
September 29, 2025 at 3:33 PM
National Academies @health.nationalacademies.org Workshop on Personal Protective Equipment for Influenza A (H5N1) in High-Risk Farm Settings happening now at www.nationalacademies.org/event/45411_...
Glad to see the toxic fume problem being addressed. Gift link to unlocked article:
www.wsj.com/business/air...
www.wsj.com/business/air...
September 25, 2025 at 1:54 PM
Glad to see the toxic fume problem being addressed. Gift link to unlocked article:
www.wsj.com/business/air...
www.wsj.com/business/air...
The momentum for clean indoor air continues to build. I attended the inaugural High-Level Side Event on indoor air quality at the UN General Assembly yesterday. Short remarks by Lidia Morawska @joeallenjoe.bsky.social @isiaq.bsky.social Pres. Kerry Kinney, ASHRAE, WHO, UNEP, many others.
September 24, 2025 at 4:36 PM
The momentum for clean indoor air continues to build. I attended the inaugural High-Level Side Event on indoor air quality at the UN General Assembly yesterday. Short remarks by Lidia Morawska @joeallenjoe.bsky.social @isiaq.bsky.social Pres. Kerry Kinney, ASHRAE, WHO, UNEP, many others.
Fascinating new observations about the corpse plant, such as, "the corpse plant’s powerful emission rates can be an order of magnitude stronger than landfills – albeit only for two nights." Most-emitted compound? Methanethiol, a skunky compound.
A rare bloom of Cosmo, CSU’s corpse plant, gave my group (Rose Rossell and @chemj.bsky.social) the chance to study corpse flower emissions in a fun collaboration with Tofwerk. Turns out to be an interesting, if stinky, story of pollination chemistry…
How a corpse plant makes its terrible smell − it has a strategy, and its female flowers do most of the work
When a corpse flower bloomed on campus, atmospheric scientists got to work. What they discovered provides new evidence about the unique pollination strategies of a very unusual flower.
theconversation.com
September 21, 2025 at 8:24 PM
Fascinating new observations about the corpse plant, such as, "the corpse plant’s powerful emission rates can be an order of magnitude stronger than landfills – albeit only for two nights." Most-emitted compound? Methanethiol, a skunky compound.
If you're interested in reading a review paper (open access) about this problem, Bill Lindsley found ehjournal.biomedcentral.com/articles/10....
September 15, 2025 at 6:45 PM
If you're interested in reading a review paper (open access) about this problem, Bill Lindsley found ehjournal.biomedcentral.com/articles/10....
GIFTED, UNLOCKED ARTICLE: www.wsj.com/business/air... with expert input from @joeallenjoe.bsky.social
This is disturbing. I'm considering adding a respirator with activated carbon to my travel kit.
This is disturbing. I'm considering adding a respirator with activated carbon to my travel kit.
Toxic Fumes Are Leaking Into Airplanes, Sickening Crews and Passengers
Doctors compare brain effects to concussions in NFL players. A Wall Street Journal investigation shows such incidents are increasingly common.
www.wsj.com
September 14, 2025 at 6:50 PM
GIFTED, UNLOCKED ARTICLE: www.wsj.com/business/air... with expert input from @joeallenjoe.bsky.social
This is disturbing. I'm considering adding a respirator with activated carbon to my travel kit.
This is disturbing. I'm considering adding a respirator with activated carbon to my travel kit.
Bill Lindsley and I are at Emory University with Seema Lakdawala and Matt Pauly testing our sampling tunnel that we use to collect virus from exhaled breath of infected people.
September 11, 2025 at 6:27 PM
Bill Lindsley and I are at Emory University with Seema Lakdawala and Matt Pauly testing our sampling tunnel that we use to collect virus from exhaled breath of infected people.
Good news for firefighters who want to protect themselves from the harmful effects of breathing smoke: www.nytimes.com/2025/09/09/u...
September 9, 2025 at 8:49 PM
Good news for firefighters who want to protect themselves from the harmful effects of breathing smoke: www.nytimes.com/2025/09/09/u...
Reposted by Linsey Marr
And now EPA has a radon superhero's activity book for kids! www.epa.gov/system/files...
Radon exposure in indoor air is the second leading cause of lung cancer.
Test your home!
Radon exposure in indoor air is the second leading cause of lung cancer.
Test your home!
www.epa.gov
September 8, 2025 at 6:06 PM
And now EPA has a radon superhero's activity book for kids! www.epa.gov/system/files...
Radon exposure in indoor air is the second leading cause of lung cancer.
Test your home!
Radon exposure in indoor air is the second leading cause of lung cancer.
Test your home!
We have policies/laws/regulations to ensure that our food and water are clean and safe. Why not for air, too?
Typical amounts taken in per day:
food = 4 lb
water = 3 lb
air = 30 lb
Typical amounts taken in per day:
food = 4 lb
water = 3 lb
air = 30 lb
www.science.org/doi/full/10....
Mandating Indoor Air Quality in Public Buildings.
Our paper in Science.
🧪 #healthpolicy
Mandating Indoor Air Quality in Public Buildings.
Our paper in Science.
🧪 #healthpolicy
www.science.org
September 2, 2025 at 9:28 PM
We have policies/laws/regulations to ensure that our food and water are clean and safe. Why not for air, too?
Typical amounts taken in per day:
food = 4 lb
water = 3 lb
air = 30 lb
Typical amounts taken in per day:
food = 4 lb
water = 3 lb
air = 30 lb
In EPA's Air Cleaning Allies activity book, Merv, Aerie, and DJ remind me of Rumi, Mira, and Zoey of K-Pop Demon Hunters. Particles in the air are the demons.
August 26, 2025 at 4:20 PM
In EPA's Air Cleaning Allies activity book, Merv, Aerie, and DJ remind me of Rumi, Mira, and Zoey of K-Pop Demon Hunters. Particles in the air are the demons.
I love the maze through an HVAC filter on page 7!
This is great. An EPA activity book for elementary school kids on air cleaning:
www.epa.gov/system/files...
www.epa.gov/system/files...
www.epa.gov
August 26, 2025 at 3:48 PM
I love the maze through an HVAC filter on page 7!
Back to school on the other side of the lectern: I'm on sabbatical and am taking Virology @virginiatech.bsky.social (for a grade), hoping to gain fresh insight into my lab's research on virus inactivation and improve my teaching by being a student again.
August 25, 2025 at 4:52 PM
Back to school on the other side of the lectern: I'm on sabbatical and am taking Virology @virginiatech.bsky.social (for a grade), hoping to gain fresh insight into my lab's research on virus inactivation and improve my teaching by being a student again.