Union of Concerned Scientists | The U.S. Senate voted to revoke federal waivers allowing California and allied states to set stricter vehicle pollution standards, prompting criticism from public health and environmental advocates. Steven Higashide of the Union of Concerned Scientists condemned the move as an attack on states’ rights and a rollback of protections that help reduce emissions and improve air quality for millions.

Rheumatology Advisor | A new study in the Journal of Bone and Mineral Research links long-term exposure to nitrogen oxides with altered plasma metabolites and bone mineral density (BMD) loss in postmenopausal women. Researchers found that reduced levels of C38:4 phosphatidylethanolamine partially mediated the relationship between nitrogen oxide exposure and lumbar spine BMD decline, suggesting a metabolic pathway by which air pollution may impair bone health.

WHYY | In Southwest Philadelphia, the Clean Air Council has installed 60 PurpleAir monitors on homes and churches to track block-level air pollution, empowering residents—especially those with respiratory conditions—to make informed health decisions. Funded by the EPA, the project fills gaps in the federal monitoring network and offers publicly accessible real-time data, fostering local awareness and advocacy despite national regulatory uncertainty.

NPR | Community groups in Louisiana have filed a federal lawsuit alleging a state law regulating community air monitoring violates their constitutional rights to free speech and petition. The law restricts the use of non-EPA-approved air sensors, limiting public data sharing and enforcement actions, which critics argue silences vital grassroots efforts in polluted areas like Cancer Alley.

Environmental Defense Fund | The U.S. House voted 216–212 to overturn a 2024 rule requiring major polluters to comply with strict air toxics standards, reinstating a Trump-era loophole that allows reclassified facilities to emit more pollution. Environmental advocates warn this rollback undermines decades of Clean Air Act protections and increases public exposure to highly toxic pollutants like arsenic, lead, and mercury.

NPR | Congress has voted to overturn a Clean Air Act rule that required industrial facilities to maintain strict pollution controls even after reducing emissions, marking the first rollback of the law’s protections. Critics warn the move will allow around 1,800 facilities to evade regulation, increasing community exposure to toxic pollutants linked to cancer, birth defects, and neurological damage.

citybuzz | IotaComm and TELLUS have announced a strategic partnership to combine IotaComm’s LoRaWAN® wireless infrastructure with TELLUS’ advanced air quality sensors and analytics. The collaboration aims to deliver real-time, hyperlocal environmental monitoring for sectors like education, manufacturing, and smart cities, enhancing public health, safety, and sustainability through integrated data insights.

Envirotech Online | Mega System Srl has introduced a fully OTM-45-compliant PFAS sampling line for stack emissions, offering high-precision monitoring through isokinetic sampling and advanced, contamination-free glassware. The system includes a heated probe, automatic isokinetic sampler, cooling unit, and a specialized glassware kit designed to ensure accurate PFAS quantification and minimize environmental and health risks.

The Salt Lake Tribune | Utah’s current air quality monitoring system is struggling to adequately track dust storms originating from the drying Great Salt Lake, raising health concerns due to toxic sediment exposure. State scientists and researchers emphasize the urgent need for expanded monitoring sites and funding to measure PM10 levels and provide timely public alerts, especially as lake levels continue to drop.

KKTV | The City of Manitou Springs will hold an outdoor Air Quality Awareness Week event on Wednesday, May 22, from 10:00 a.m. to 2:30 p.m. at Memorial Park. Residents are encouraged to walk or bike to school and attend the event to learn how to reduce their impact on air quality.

Union of Concerned Scientists | The U.S. Senate voted to revoke federal waivers allowing California and allied states to set stricter vehicle pollution standards, prompting criticism from public health and environmental advocates. Steven Higashide of the Union of Concerned Scientists condemned the move as an attack on states’ rights and a rollback of protections that help reduce emissions and improve air quality for millions.

Rheumatology Advisor | A new study in the Journal of Bone and Mineral Research links long-term exposure to nitrogen oxides with altered plasma metabolites and bone mineral density (BMD) loss in postmenopausal women. Researchers found that reduced levels of C38:4 phosphatidylethanolamine partially mediated the relationship between nitrogen oxide exposure and lumbar spine BMD decline, suggesting a metabolic pathway by which air pollution may impair bone health.

WHYY | In Southwest Philadelphia, the Clean Air Council has installed 60 PurpleAir monitors on homes and churches to track block-level air pollution, empowering residents—especially those with respiratory conditions—to make informed health decisions. Funded by the EPA, the project fills gaps in the federal monitoring network and offers publicly accessible real-time data, fostering local awareness and advocacy despite national regulatory uncertainty.

NPR | Community groups in Louisiana have filed a federal lawsuit alleging a state law regulating community air monitoring violates their constitutional rights to free speech and petition. The law restricts the use of non-EPA-approved air sensors, limiting public data sharing and enforcement actions, which critics argue silences vital grassroots efforts in polluted areas like Cancer Alley.

Environmental Defense Fund | The U.S. House voted 216–212 to overturn a 2024 rule requiring major polluters to comply with strict air toxics standards, reinstating a Trump-era loophole that allows reclassified facilities to emit more pollution. Environmental advocates warn this rollback undermines decades of Clean Air Act protections and increases public exposure to highly toxic pollutants like arsenic, lead, and mercury.

NPR | Congress has voted to overturn a Clean Air Act rule that required industrial facilities to maintain strict pollution controls even after reducing emissions, marking the first rollback of the law’s protections. Critics warn the move will allow around 1,800 facilities to evade regulation, increasing community exposure to toxic pollutants linked to cancer, birth defects, and neurological damage.

citybuzz | IotaComm and TELLUS have announced a strategic partnership to combine IotaComm’s LoRaWAN® wireless infrastructure with TELLUS’ advanced air quality sensors and analytics. The collaboration aims to deliver real-time, hyperlocal environmental monitoring for sectors like education, manufacturing, and smart cities, enhancing public health, safety, and sustainability through integrated data insights.

Envirotech Online | Mega System Srl has introduced a fully OTM-45-compliant PFAS sampling line for stack emissions, offering high-precision monitoring through isokinetic sampling and advanced, contamination-free glassware. The system includes a heated probe, automatic isokinetic sampler, cooling unit, and a specialized glassware kit designed to ensure accurate PFAS quantification and minimize environmental and health risks.

The Salt Lake Tribune | Utah’s current air quality monitoring system is struggling to adequately track dust storms originating from the drying Great Salt Lake, raising health concerns due to toxic sediment exposure. State scientists and researchers emphasize the urgent need for expanded monitoring sites and funding to measure PM10 levels and provide timely public alerts, especially as lake levels continue to drop.

KKTV | The City of Manitou Springs will hold an outdoor Air Quality Awareness Week event on Wednesday, May 22, from 10:00 a.m. to 2:30 p.m. at Memorial Park. Residents are encouraged to walk or bike to school and attend the event to learn how to reduce their impact on air quality.