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Salt and large African herbivores — Level B2 — Acacia trees in a dry, desert landscape.
30 Dec 2025

Salt and large African herbivores

A study with the University of Zurich shows many large wild herbivores in Africa lack enough sodium. Researchers used maps, animal data and fecal tests to see where animals get salt and why they travel for it.

Photo by Francesca Fabian, Unsplash

Beaver mimicry to restore waterways — Level B2 — gray body of water
10 Dec 2025

Beaver mimicry to restore waterways

A Washington State University review finds that human-made beaver dams, or beaver mimicry, can help rivers and streams. The studies show benefits for water storage, cooler summer temperatures, biodiversity and fire resistance, but more research is needed.