Kataza, a baboon well known for visiting Cape Town homes, eats a pilfered sweet potato in the author’s yard while a neighbor looks on.

For years, baboons have roamed Cape Town suburbs, entering yards and houses in search of food. Now officials have a conservation plan aimed at reducing conflicts between the large primates and people — but like most things baboon-related here, it is sparking heated controversy.

By Adam Welz

Solutions

In Hunt for Rare Earths, Companies Are Scouring Mining Waste

Tailings and acid mine drainage from mines contain critical minerals needed for clean energy technologies. Now, researchers are developing new techniques for retrieving these key metals, which could reduce the need for new mines and help clean up pollution at old mining sites.

By Jim Robbins

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Healthy ochre sea stars on Vancouver Island, Canada.

Oceans

Sea Star Murder Mystery: What’s Killing a Key Ocean Species?

Billions of sea stars, victims of a deadly wasting illness, have perished over the last decade, imperiling marine ecosystems and spurring a global hunt for a biological or environmental culprit. Recently, researchers identified a likely suspect, but the case is far from closed.

By Nicola Jones

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