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Air Quality Alert Issued for Twin Cities as Ozone Reaches Unhealthy for Sensitive Groups

Meteorological conditions that help form ozone from vehicle and industrial emissions pose a health risk to people with asthma, COPD, heart disease, children, the elderly.

Wildfires Have Reversed Years of U.S. Progress on Ground-Level Ozone

Airborne Microplastics Warm the Planet at About One-Sixth of Soot’s Effect

Industrial Feedstock Leaks Could Push Ozone Recovery Back Seven Years, Study Finds

Science Study: COVID Lockdowns Weakened Methane Sink, Fueling Early‑2020s Surge

New Study Urges 'Design for Non‑Demise' to Curb Ozone‑Harming Satellite Reentries

Global Study Finds Rising Hydrogen Amplifies Methane and Adds to Warming

Perseverance Confirms Tiny Lightning in Martian Dust Devils and Storm Fronts

Single-Camera Hyperspectral Method Maps Blue Aurora Peak at 200 Kilometers

Columbia Study Finds Sun-Dimming Geoengineering Faces Severe Real-World Limits

Peer-Reviewed Study Ties Tijuana River to Toxic Air in San Diego’s South Bay

Penguin Guano Found to Influence Antarctic Climate Through Cloud Formation