In Serbia, Mangalitsa pigs dig up forest floors in search of acorns, helping create fertile alluvial soil. But pig herders are a dying breed. Is the tradition at risk?
While in many countries, pigs are brought up in confined spaces, Serbia has a long tradition of rearing the animals in the forest. Efforts are underway to ensure this ecologically friendly tradition doesn't die out.
Can scientists, activists, fishermen and consumers find a way to save the ancient Danube sturgeon? Killing the appetite for wild caviar would help, say conservationists.
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