Jose-Luis Jimenez
@jljcolorado.bsky.social
Dist. Prof. Chem. & CIRES, Univ. Colorado. #HighlyCited2022, Fellow AAAR & AGU. http://Bit.ly/TenSR http://Bit.ly/ATRVs Aerosols, pollution #EndFossilFuels #COVIDisAirborne. Views are my own
Reposted by Jose-Luis Jimenez
'What surprised them was that 16.3% of those babies received a neurodevelopmental diagnosis by three years, compared with 9.7% of the babies who were not exposed to COVID-19 in utero'.
www.propublica.org/article/covi...
www.propublica.org/article/covi...
Amid Confusing CDC Guidance About Vaccines, Study Highlights New Risk of COVID-19 During Pregnancy
A Harvard study found that the children of women who contracted COVID-19 while pregnant may be at an increased risk for autism and other diagnoses, raising new concerns about the CDC’s decision to sto...
www.propublica.org
November 29, 2025 at 8:13 PM
'What surprised them was that 16.3% of those babies received a neurodevelopmental diagnosis by three years, compared with 9.7% of the babies who were not exposed to COVID-19 in utero'.
www.propublica.org/article/covi...
www.propublica.org/article/covi...
Reposted by Jose-Luis Jimenez
Three CIRES researchers are listed as 2025 Clarivate "Highly Cited Researchers 2025." The annual list celebrates researchers with significant and broad influence: Jennifer Balch, Noah Fierer, and Jose Jimenez! @cu-esiil.bsky.social @clarivate.com @noahfierer.bsky.social @jljcolorado.bsky.social
November 13, 2025 at 9:45 PM
Three CIRES researchers are listed as 2025 Clarivate "Highly Cited Researchers 2025." The annual list celebrates researchers with significant and broad influence: Jennifer Balch, Noah Fierer, and Jose Jimenez! @cu-esiil.bsky.social @clarivate.com @noahfierer.bsky.social @jljcolorado.bsky.social
Reposted by Jose-Luis Jimenez
PhD candidate @colorado.edu Rebecca Mesburis is going to give a Town Talk in #Nederland on Thursday. The town of Ned had a devastating fire recently in their town shopping center. Support #Ned and learn about mitigating indoor air quality impacts from #smoke! @jljcolorado.bsky.social
October 20, 2025 at 9:33 PM
PhD candidate @colorado.edu Rebecca Mesburis is going to give a Town Talk in #Nederland on Thursday. The town of Ned had a devastating fire recently in their town shopping center. Support #Ned and learn about mitigating indoor air quality impacts from #smoke! @jljcolorado.bsky.social
Reposted by Jose-Luis Jimenez
Also see the great study by Mesburis et al. (@jljcolorado.bsky.social and @gouwlab.bsky.social), which used some different approaches but arrived at the same conclusions. Air cleaners (legit ones) work, and enable other technologies (like GUV) to be used more safely.
pubs.acs.org/doi/10.1021/...
pubs.acs.org/doi/10.1021/...
Mitigation of Indoor Air Pollution from Air Cleaners Using a Catalyst
The COVID-19 pandemic highlighted the importance of indoor air quality and the role of airborne transmission in the disease spread. Heightened public awareness led to an increase in the commercializat...
pubs.acs.org
August 29, 2025 at 12:58 PM
Also see the great study by Mesburis et al. (@jljcolorado.bsky.social and @gouwlab.bsky.social), which used some different approaches but arrived at the same conclusions. Air cleaners (legit ones) work, and enable other technologies (like GUV) to be used more safely.
pubs.acs.org/doi/10.1021/...
pubs.acs.org/doi/10.1021/...
Reposted by Jose-Luis Jimenez
NYT: The Trump administration has drafted a plan to repeal a fundamental scientific finding that gives the United States government its authority to regulate greenhouse-gas emissions and fight climate change, according to two people familiar with the plan.
E.P.A. Is Said to Draft a Plan to End Its Ability to Fight Climate Change
www.nytimes.com
July 23, 2025 at 3:43 AM
NYT: The Trump administration has drafted a plan to repeal a fundamental scientific finding that gives the United States government its authority to regulate greenhouse-gas emissions and fight climate change, according to two people familiar with the plan.
Reposted by Jose-Luis Jimenez
Reposted by Jose-Luis Jimenez
The article claiming that SARS-CoV-2 remains infectious in the air for 16 hours has been making the rounds on social media again.
I thought I would take this opportunity to discuss it, what it shows, what it doesn’t, and why I think it shouldn’t be taken seriously.
A thread.
I thought I would take this opportunity to discuss it, what it shows, what it doesn’t, and why I think it shouldn’t be taken seriously.
A thread.
May 25, 2025 at 6:58 PM
The article claiming that SARS-CoV-2 remains infectious in the air for 16 hours has been making the rounds on social media again.
I thought I would take this opportunity to discuss it, what it shows, what it doesn’t, and why I think it shouldn’t be taken seriously.
A thread.
I thought I would take this opportunity to discuss it, what it shows, what it doesn’t, and why I think it shouldn’t be taken seriously.
A thread.
Reposted by Jose-Luis Jimenez
A victory for the federal scientific workforce! We could not stand by while this irreparable harm continues at NSF, NOAA and all our scientific agencies.
TODAY the judge granted our request to temporarily HALT the mass firings at federal agencies under Trump’s Executive Order.
TODAY the judge granted our request to temporarily HALT the mass firings at federal agencies under Trump’s Executive Order.
May 10, 2025 at 2:03 AM
A victory for the federal scientific workforce! We could not stand by while this irreparable harm continues at NSF, NOAA and all our scientific agencies.
TODAY the judge granted our request to temporarily HALT the mass firings at federal agencies under Trump’s Executive Order.
TODAY the judge granted our request to temporarily HALT the mass firings at federal agencies under Trump’s Executive Order.
Reposted by Jose-Luis Jimenez
There is no need for this suffering.
The solutions are here, work well, way cheaper in the long term and magnitude better for our wellbeing.
-Electrify all homes including rentals and social housing.
-Ban gas connection to new homes.
-Plan the end of the residential gas network
The solutions are here, work well, way cheaper in the long term and magnitude better for our wellbeing.
-Electrify all homes including rentals and social housing.
-Ban gas connection to new homes.
-Plan the end of the residential gas network
Funny how breathing combustion byproducts causes all kinds of harm.
www.sfchronicle.com/health/artic...
www.sfchronicle.com/health/artic...
Gas stoves nearly double children’s cancer risk, Stanford study finds
Stanford study finds gas stoves emit benzene, nearly doubling cancer risk in children — especially in homes with poor ventilation.
www.sfchronicle.com
May 10, 2025 at 12:38 AM
There is no need for this suffering.
The solutions are here, work well, way cheaper in the long term and magnitude better for our wellbeing.
-Electrify all homes including rentals and social housing.
-Ban gas connection to new homes.
-Plan the end of the residential gas network
The solutions are here, work well, way cheaper in the long term and magnitude better for our wellbeing.
-Electrify all homes including rentals and social housing.
-Ban gas connection to new homes.
-Plan the end of the residential gas network
Reposted by Jose-Luis Jimenez
Nice: 49% strongly oppose withholding funds from universities, 23% strongly support www.nytimes.com/interactive/...
April 25, 2025 at 8:42 PM
Nice: 49% strongly oppose withholding funds from universities, 23% strongly support www.nytimes.com/interactive/...
Reposted by Jose-Luis Jimenez
A new article estimates that even a 10% DECLINE in MMR vax coverage in the US could lead to 11 MILLION US measles cases over 25 years.
IF instead MMR coverage INCREASES by 5%, cases would falled to <10K.
Given infectiousness of Measlies, it's VITAL to ⬆️ MMR vax rates.
Measles info below 1/2
IF instead MMR coverage INCREASES by 5%, cases would falled to <10K.
Given infectiousness of Measlies, it's VITAL to ⬆️ MMR vax rates.
Measles info below 1/2
April 25, 2025 at 1:38 PM
A new article estimates that even a 10% DECLINE in MMR vax coverage in the US could lead to 11 MILLION US measles cases over 25 years.
IF instead MMR coverage INCREASES by 5%, cases would falled to <10K.
Given infectiousness of Measlies, it's VITAL to ⬆️ MMR vax rates.
Measles info below 1/2
IF instead MMR coverage INCREASES by 5%, cases would falled to <10K.
Given infectiousness of Measlies, it's VITAL to ⬆️ MMR vax rates.
Measles info below 1/2
Reposted by Jose-Luis Jimenez
Last month, the CDC Division of Viral Hepatitis found the source of a Hepatitis C outbreak in Florida that state officials had been unable to solve since December. Now the entire Division has been fired, leaving investigations of outbreaks in OR, PA, MA, NM, WI, WV and GA, unsolved in addition to FL
All 27 scientists at this CDC lab were told their duties were "unnecessary," and now viral outbreak investigations have been halted.
In the middle of a hepatitis outbreak, U.S. shutters the one CDC lab that could help
All 27 scientists at this CDC lab were told their duties were "unnecessary," and now viral outbreak investigations have been halted
www.npr.org
April 17, 2025 at 12:59 AM
Last month, the CDC Division of Viral Hepatitis found the source of a Hepatitis C outbreak in Florida that state officials had been unable to solve since December. Now the entire Division has been fired, leaving investigations of outbreaks in OR, PA, MA, NM, WI, WV and GA, unsolved in addition to FL
Reposted by Jose-Luis Jimenez
Last one for Tax Day – NOAA 🌊
The average U.S. taxpayer contributes $21/year to the National Oceanic and Atmospheric Administration.
💡 NOAA turns science into safety — for coasts, communities, & the climate. It helps safeguard lives, property, and ecosystems from rising seas and extreme weather.
The average U.S. taxpayer contributes $21/year to the National Oceanic and Atmospheric Administration.
💡 NOAA turns science into safety — for coasts, communities, & the climate. It helps safeguard lives, property, and ecosystems from rising seas and extreme weather.
April 16, 2025 at 12:54 AM
Last one for Tax Day – NOAA 🌊
The average U.S. taxpayer contributes $21/year to the National Oceanic and Atmospheric Administration.
💡 NOAA turns science into safety — for coasts, communities, & the climate. It helps safeguard lives, property, and ecosystems from rising seas and extreme weather.
The average U.S. taxpayer contributes $21/year to the National Oceanic and Atmospheric Administration.
💡 NOAA turns science into safety — for coasts, communities, & the climate. It helps safeguard lives, property, and ecosystems from rising seas and extreme weather.
Canadian academics warned against travel to the US
"Given the rapidly evolving political landscape and reports of individuals encountering difficulties crossing the border, CAUT strongly recommends that academic staff travel to the US only if essential and necessary"
www.caut.ca/latest/2025/...
"Given the rapidly evolving political landscape and reports of individuals encountering difficulties crossing the border, CAUT strongly recommends that academic staff travel to the US only if essential and necessary"
www.caut.ca/latest/2025/...
CAUT advises academics against non-essential travel to the U.S.
Given the rapidly evolving political landscape in the United States and reports of individuals encou
www.caut.ca
April 16, 2025 at 2:53 AM
Canadian academics warned against travel to the US
"Given the rapidly evolving political landscape and reports of individuals encountering difficulties crossing the border, CAUT strongly recommends that academic staff travel to the US only if essential and necessary"
www.caut.ca/latest/2025/...
"Given the rapidly evolving political landscape and reports of individuals encountering difficulties crossing the border, CAUT strongly recommends that academic staff travel to the US only if essential and necessary"
www.caut.ca/latest/2025/...
Reposted by Jose-Luis Jimenez
The Trump administration is quietly carrying out a plan that aims to kill hundreds of bans on highly toxic “forever chemicals” and other dangerous compounds in consumer goods
www.theguardian.com/environment/...
www.theguardian.com/environment/...
Trump officials quietly move to reverse bans on toxic ‘forever chemicals’
EPA bids to change chemical risk evaluations, which could expose public to higher levels of PFAS and other pollutants
www.theguardian.com
April 12, 2025 at 7:42 PM
The Trump administration is quietly carrying out a plan that aims to kill hundreds of bans on highly toxic “forever chemicals” and other dangerous compounds in consumer goods
www.theguardian.com/environment/...
www.theguardian.com/environment/...
Reposted by Jose-Luis Jimenez
A good article explaining the senseless destuction of one of the US's most critical research institutions www.nytimes.com/2025/04/11/o...
Opinion | What Is Actually the Point of Treating the N.I.H. Like This? (Gift Article)
Efficiency is not being enhanced, nor is waste being eliminated at the N.I.H. Scientists are just left to wonder: Why?
www.nytimes.com
April 12, 2025 at 5:31 AM
A good article explaining the senseless destuction of one of the US's most critical research institutions www.nytimes.com/2025/04/11/o...
Reposted by Jose-Luis Jimenez
Reposted by Jose-Luis Jimenez
Very pleased to see this from the UK PROTECT study published. There’s still gaps on translation to humans, infectious dose etc, but it adds further evidence that covid can transmit by airborne routes academic.oup.com/ofid/advance...
Human source SARS-CoV-2 aerosol transmission to remote sentinel hamsters
AbstractBackground. Bioaerosol-mediated transmission of COVID-19 via building ventilation systems has yet to be convincingly demonstrated. We used the Sout
academic.oup.com
April 6, 2025 at 12:06 PM
Very pleased to see this from the UK PROTECT study published. There’s still gaps on translation to humans, infectious dose etc, but it adds further evidence that covid can transmit by airborne routes academic.oup.com/ofid/advance...
Reposted by Jose-Luis Jimenez
📃 Facts and myths about #measles
“Measles is a ‘canary in the coalmine’ for under-vaccination [...] knowing the facts about measles information and disinformation is key.”
Read and share the @thelancetinfdis.bsky.social’s April Editorial ➡️ hubs.ly/Q03g26gH0
“Measles is a ‘canary in the coalmine’ for under-vaccination [...] knowing the facts about measles information and disinformation is key.”
Read and share the @thelancetinfdis.bsky.social’s April Editorial ➡️ hubs.ly/Q03g26gH0
Facts and myths about measles
It seems ironic that Robert F Kennedy Jr, one of the most prominent antivaccine activists,
has been made Secretary of Health and Human Services in the USA while one of the largest
recent measles outbr...
hubs.ly
April 6, 2025 at 10:39 AM
📃 Facts and myths about #measles
“Measles is a ‘canary in the coalmine’ for under-vaccination [...] knowing the facts about measles information and disinformation is key.”
Read and share the @thelancetinfdis.bsky.social’s April Editorial ➡️ hubs.ly/Q03g26gH0
“Measles is a ‘canary in the coalmine’ for under-vaccination [...] knowing the facts about measles information and disinformation is key.”
Read and share the @thelancetinfdis.bsky.social’s April Editorial ➡️ hubs.ly/Q03g26gH0
Reposted by Jose-Luis Jimenez
A second child has died in the current US measles outbreak: An entirely avoidable tragedy and one more sign that this outbreak is probably much larger than reported numbers suggest and not going anywhere soon...
#IDsky 🧪
#IDsky 🧪
A Second Child Dies of Measles in Texas
It is the second confirmed measles death in the U.S. in a decade. If the outbreak continues at the current pace, the nation may lose its “elimination” status.
www.nytimes.com
April 6, 2025 at 1:27 PM
A second child has died in the current US measles outbreak: An entirely avoidable tragedy and one more sign that this outbreak is probably much larger than reported numbers suggest and not going anywhere soon...
#IDsky 🧪
#IDsky 🧪
Climate crisis on track to destroy capitalism, warns top insurer
"Action urgently needed to save the conditions under which markets – and civilisation itself – can operate, says senior Allianz figure"
www.theguardian.com/environment/...
"Action urgently needed to save the conditions under which markets – and civilisation itself – can operate, says senior Allianz figure"
www.theguardian.com/environment/...
Climate crisis on track to destroy capitalism, warns top insurer
Action urgently needed to save the conditions under which markets – and civilisation itself – can operate, says senior Allianz figure
www.theguardian.com
April 6, 2025 at 1:21 AM
Climate crisis on track to destroy capitalism, warns top insurer
"Action urgently needed to save the conditions under which markets – and civilisation itself – can operate, says senior Allianz figure"
www.theguardian.com/environment/...
"Action urgently needed to save the conditions under which markets – and civilisation itself – can operate, says senior Allianz figure"
www.theguardian.com/environment/...
Reposted by Jose-Luis Jimenez
7/6
We've added a page to the guide to point out further resources: those of @ukhadds.bsky.social , Andre Henriques & Al, and the World Health Organization. Our guide can be downloaded from letsair.org#mediation
We've added a page to the guide to point out further resources: those of @ukhadds.bsky.social , Andre Henriques & Al, and the World Health Organization. Our guide can be downloaded from letsair.org#mediation
April 5, 2025 at 10:43 AM
7/6
We've added a page to the guide to point out further resources: those of @ukhadds.bsky.social , Andre Henriques & Al, and the World Health Organization. Our guide can be downloaded from letsair.org#mediation
We've added a page to the guide to point out further resources: those of @ukhadds.bsky.social , Andre Henriques & Al, and the World Health Organization. Our guide can be downloaded from letsair.org#mediation
Reposted by Jose-Luis Jimenez
NEW | Fossil fuels fall below 50% of US electricity for the first month on record 🇺🇸
Among all the turmoil, some positive news from the latest @ember-energy.org data for March 2025:
🏆↘️ The share of fossil fuels fell to a record low of 49.2%
🏆↗️ Wind and solar power hit a new record high of 24.4%
Among all the turmoil, some positive news from the latest @ember-energy.org data for March 2025:
🏆↘️ The share of fossil fuels fell to a record low of 49.2%
🏆↗️ Wind and solar power hit a new record high of 24.4%
April 4, 2025 at 3:05 PM
NEW | Fossil fuels fall below 50% of US electricity for the first month on record 🇺🇸
Among all the turmoil, some positive news from the latest @ember-energy.org data for March 2025:
🏆↘️ The share of fossil fuels fell to a record low of 49.2%
🏆↗️ Wind and solar power hit a new record high of 24.4%
Among all the turmoil, some positive news from the latest @ember-energy.org data for March 2025:
🏆↘️ The share of fossil fuels fell to a record low of 49.2%
🏆↗️ Wind and solar power hit a new record high of 24.4%
Reposted by Jose-Luis Jimenez
Colleagues are cancelling their US work trips. I worry that international colleagues in the US are at risk if they collaborate with us on certain topics.
I've written a new post about the increasing danger of being a foreign scientist in the US.
christinapagel.substack.com/p/trumps-att...
I've written a new post about the increasing danger of being a foreign scientist in the US.
christinapagel.substack.com/p/trumps-att...
Trump's attacks on universities get ever darker, with the shadows reaching our shores
The US has become a hostile and authoritarian state to foreign scientists and is choosing ideology over science.
christinapagel.substack.com
March 28, 2025 at 7:36 PM
Colleagues are cancelling their US work trips. I worry that international colleagues in the US are at risk if they collaborate with us on certain topics.
I've written a new post about the increasing danger of being a foreign scientist in the US.
christinapagel.substack.com/p/trumps-att...
I've written a new post about the increasing danger of being a foreign scientist in the US.
christinapagel.substack.com/p/trumps-att...
Reposted by Jose-Luis Jimenez
EPA Solidarity walks are happening TOMORROW, May 25th in cities across the United States! ☀️🌎💧
Check out the link below to learn more, join a walk, or find more information about how to advocate for the EPA. Clean water and air are human rights.
linktr.ee/EPAsolidarity
#scienceforall
Check out the link below to learn more, join a walk, or find more information about how to advocate for the EPA. Clean water and air are human rights.
linktr.ee/EPAsolidarity
#scienceforall
EPA Solidarity | Linktree
Clean water and clean air are human rights.
Join the fight. Stand with the EPA.
linktr.ee
March 24, 2025 at 3:32 PM
EPA Solidarity walks are happening TOMORROW, May 25th in cities across the United States! ☀️🌎💧
Check out the link below to learn more, join a walk, or find more information about how to advocate for the EPA. Clean water and air are human rights.
linktr.ee/EPAsolidarity
#scienceforall
Check out the link below to learn more, join a walk, or find more information about how to advocate for the EPA. Clean water and air are human rights.
linktr.ee/EPAsolidarity
#scienceforall