Phys.org: Eaton Fire may have exposed nearly 7 million people to elevated lead levels, by California Institute of Technology

From the article: “For context, the scientists note that since the early 1980s, when leaded gasoline was being phased out in Los Angeles, typical concentrations of lead in the Los Angeles Basin have declined by more than two orders of magnitude, or by about 99%. So while the spike in lead values is dramatic compared with current baselines, it was in line with what was normal before the 1980s.”

The original research article published by Caltech scientists: Science Advances: Fire at the boundary: Airborne toxic metals from the 2025 Los Angeles urban firestorm

The Guardian: All of a flutter: how butterflies avoid being a predator’s lunch

Butterfly wings create optical illusions for birds when they flap, which confuses birds about what direction they are flying in