Severe droughts threaten sustainable catch of the Amazon’s giant fish

Two years of record-breaking drought have dealt a heavy blow to what is arguably the Amazon’s most successful sustainable economy: the managed fishery for the

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Stone-eaters that threaten Iran’s ancient Persepolis

Ruins of the stone Gates in Persepolis, the ceremonial capital of the Achaemenid Empire. Conservationists at Persepolis, Iran’s most iconic ancient site, are waging a

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