<p>When raised lead levels were noticed in Los Angeles last year, a chemist — who usually examines asteroids — quickly saw that the fires that ravaged the region in January 2025 were to blame. </p>

When raised lead levels were noticed in Los Angeles last year, a chemist — who usually examines asteroids — quickly saw that the fires that ravaged the region in January 2025 were to blame.

<p>When raised lead levels were noticed in Los Angeles last year, a chemist — who usually examines asteroids — quickly saw that the fires that ravaged the region in January 2025 were to blame.&nbsp;</p>

Astronomy and toxicology converge at Caltech

The Science Show gives Australians unique insights into the latest scientific research and debate, from the physics of cricket to prime ministerial biorhythms.

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Natural Sciences

The Science Show gives Australians unique insights into the latest scientific research and debate, from the physics of cricket to prime ministerial biorhythms.

The Science Show&nbsp;gives Australians unique insights into the latest scientific research and debate, from the physics of cricket to prime ministerial biorhythms.

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Astronomy and toxicology converge at Caltech

Astronomy and toxicology converge at Caltech