PostdocAd-GXS Postdoctoral Associate: Geostationary measurements of atmospheric chemistry Join us! Our atmospheric chemistry group at the University of Minnesota (UMN) is seeking applications for a Postdoctoral A...

Postdoc opening: Geostationary measurements of atmospheric chemistry

Join us! Our group seeks a postdoc to work on space-based measurements of atmospheric chemistry with the new generation of geo-IR satellite instruments.

See z.umn.edu/b5iz for details & contact me (dbm@umn.edu) with questions!

Young Innovators: U of S student uncovers hidden risk in cleaning products Pedro A. F. Souza is looking to understand how certain cleaning products and conditions compromise our indoor air quality.

This week, I had the pleasure of being featured at the @usask.ca and Saskatoon StarPhoenix Young Innovators series, where I shared a little bit of my research!

thestarphoenix.com/news/local-n...

Thompson Rivers University: Assistant Professor tripartite position in Analytical Chemistry and 2-year Limited Term Contract, Assistant Teaching Professor chempostingscanada.blogspot.com/2026/03/thompson-rivers-...

Mechanisms of ozone effects on plant stress in soybean across growing season: from leaf to regional perspective Ground-level ozone (O3) is a major constraint on agricultural productivity, yet most knowledge comes from controlled fumigation experiments using chronic exposures that differ from the episodic condit...

I am so excited about this paper! Luka Mamić was a visiting PhD student who studied remote sensing and data tools at Sapienza U in Rome - he was curious about air pollution interactions with crops and game to try some experimental science...
pubs.rsc.org/en/content/a...

These Olympics are first to feature a ban on ‘forever chemicals’ in ski and snowboard wax For decades, elite skiers and snowboarders chased medals with the help of high-performance wax made with the toxic

For decades, ski wax shed toxic #PFAS into snow, soil and waterways.

#ForeverChemicals don’t break down and contamination doesn’t stay on the mountain.

The 2026 #Olympics will be the first with fluorine-free ski wax.

Why that’s a big deal for health and the environment www.ewg.org/news-insight...

Working on a story for Science about cuts to Canada's government researchers and labs. If you are affected by this please reach out (either on here or via my website). Anonymity is an option. 🧪

At the start of classes I ask my students if they have any good science jokes: I'd never heard this one before.

"Why do chemists like nitrates so much? They're cheaper than day rates."

3M ends PFAS manufacturing on schedule The Maplewood-based company announced in 2022 it would cease producing using the “forever chemical” in the span of three years, though it still expects to use third-party PFAS in some products.

A hugely important and hopeful story out of Minnesota. 3M, which had been the world's largest manufacturer of toxic #PFAS since 1950s, has officially gotten out of the business.
www.startribune.com/3m-end-pfas-...

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).

We are thrilled to announce our Outstanding Papers of 2024!

Huge congratulations to all the deserving winners! See the below thread for all this year’s winning articles #EnvSciOutstandingPapers
1/7

It’s simply not possible to overstate how important NCAR is to US and world science. We need to fight this with everything we’ve got.

Honoured to be selected for this award and gutted that I can't be at #AGU25 in person (COVID strikes again) 😭
Those of you in NOLA, please eat an extra beignet and walk an extra few thousand steps for me!

Prenatal exposure to perfluoroalkyl substances predicts multimodal brain structural and functional outcomes in children aged 5 years: a birth cohort study We show an association between prenatal PFAS exposure and brain developmental outcomes in children. These findings are pertinent given the ubiquitous circulation of PFAS in humans and the extreme envi...

Disturbing new paper shows an association between PFAS (at pretty low levels) and children's brain development

www.thelancet.com/journals/lan...

More data centres -> more F-gases -> more climate impact + more TFA #PFAS

Thank you!! ☺️

Thank you! 😊

Screenshot of the banner for the ESP&I special issue on Indoor Environments.

I'm excited to share a 𝗡𝗲𝘄 #𝘌𝘚𝘗𝘐 𝗜𝗻𝗱𝗼𝗼𝗿 𝗘𝗻𝘃𝗶𝗿𝗼𝗻𝗺𝗲𝗻𝘁 𝗧𝗵𝗲𝗺𝗲𝗱 Special issue! @rsc.org

This was guest edited by myself and Ellison Carter, and it showcases research that centers around questions of the built environment, featuring the impacts of interdisciplinary approaches.
shorturl.at/pIY0i

Come to Toronto and be my colleague!

Assistant Professor (Tenure Track) of Soil Chemistry

We are looking for an Assistant Professor (tenure track) in the area of Soil Chemistry. Please spread the word! Application deadline is September 30.

ethz.ch/en/the-eth-z...

Tractor applying pesticide to a barren field. Photo by Bence Balla-Schottner on Unsplash

Breaking #TFA news: The Danish Ministry of the Environment is withdrawing the approval of 23 #pesticides because the products contain active ingredients that can form and leach #TFA into groundwater. This is the first country to ban #PFAS pesticides.

Press release (Danish):
mst.dk/nyheder/2025...

Promotional image for a Royal Society of Chemistry event titled "ChemCareers: Moving from a PhD into industry" on 16 July 2025, featuring two professionals in safety gear examining a digital tablet.

Making the move from academia to industry might feel daunting, but our webinar covers what you need to know. The session includes practical advice on identifying transferable skills, finding the right role and how to build a compelling application. Register for free: buff.ly/KIMtTmU #ChemSky

UV-C light kills nearly everything—except this unusual organism Built-in Sun protection might be a blueprint for surviving in space

UV-C light is a go-to sterilizer for hospitals and labs. 🦠🔬 Why can this dark desert lichen survive a "mind-blowing level of UV-C harshness" - and could it provide clues to life on other planets? 🌱 🪐 Today for @science.org #astrobiology #biology www.science.org/content/arti...

Check out our statement and if you are a PFAS researcher who agrees, you can sign on here: www.ipcp.ch/news/sign-on...

Forever chemicals: Scientists condemn massive lobbying campaign to alter PFAS definition In a letter published Tuesday in a scientific journal, a group of 20 researchers warn that 'this effort is politically and/or economically, rather than scientifically, motivated.'

Forever chemicals: Scientists condemn massive lobbying campaign to alter PFAS definition

Regulation is effectively a separate question. If policymakers wish to exempt certain #PFAS from regulation, this can be done without changing the general definition and creating confusion. Both Canada and the EU are already doing this!

Scientists’ Statement on the Chemical Definition of PFASs You have not visited any articles yet, Please visit some articles to see contents here.

There have been arguments to redefine #PFAS that seem to be politically or economically motivated.
We (20 scientists with PFAS expertise) argue here that the definition of PFAS should be unambiguous and based on chemical structure.
pubs.acs.org/doi/10.1021/...

Smokey sunrise over downtown Toronto caused by climate change fueled forest fires in Alberta Saskatchewan and Manitoba.

Nothing says "Canadian Unity" like a Smokey Sunrise as western wildfire smoke covers Toronto and the rest of eastern Canada in early June while our leaders stump for more oil production in an effort to make it year round.

That feeling in your eyes is the itch of climate change.

🌊 NOAA and NSF budget requests would amount to decimation of earth, ocean and atmospheric science in the US.

We are looking for a postdoc to join our research group at York University in Toronto, Canada to study the atmospheric chemistry of PFAS #PFAS
www.cjygroup.com/opportunities

Congratulations to Shira (@shirajoudan.bsky.social) for this well-deserved honour! So proud of this rising star 😭⭐