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

A new high-resolution AI dataset links the reversal to wildfire smoke, posing a major obstacle to tightening U.S. ozone rules.

Webb Unveils Layered 'Exposed Cranium' Nebula With Jet-Carved Divide

ISS Photo of Rare Gigantic Jet Joins NASA’s Spritacular Database