Pittsburghers preserving pawpaw trees, some hope it will lead to more zebra swallowtail butterflies

On a wooded hillside along the banks of the Allegheny River, Gabrielle Marsden brushed up against an oblong leaf: Asimina ...
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In Panama, poison dart frog move brings hope amid amphibians’ fight with fungus

Twelve pairs of poison dart frogs were recently translocated in Panama in a bid to strengthen the species’ chances of ...