2 gray wolves captured and collared in Northern California

Two members of California's small but rebounding gray wolf population have been located and given tracking collars, bolstering the state's conservation efforts, the California Department of Fish and Wildlife announced Friday.

New research shows humans impact wolf packs in national parks

New research shows how humans are a substantial source of mortality for wolves that live predominantly in national parks—and more importantly, that human-caused mortality triggers instability in wolf packs in national parks.

How bringing back lost species revives ecosystems

Scientists often study the grim impacts of losing wildlife to hunting, habitat destruction and climate change. But what happens when endangered animals are brought back from the brink?

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