Horizontal Levees Are Spreading Across the Bay Area.

Reasons to be Cheerful · Published 2026-08-24 · Updated 2026-09-06

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The key development: This story was originally published by Grist. Sign up for Grist’s weekly newsletter here, according to Reasons to be Cheerful.

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The bigger picture: When a species bounces back, it's a sign that the ecosystems supporting it are healing too — and that's good news for everyone.

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