Along South America’s windswept southern coast, Magellanic penguins have spent decades nesting in relative safety. For much of the twentieth century, sheep ranching dominated the region, and pumas ...

Reintroducing keystone predator species can have a near-miraculous restorative effect on ecosystems. This is what I would remind a Patagonian penguin who is feeling a bit down about his whole family ...

The four-foot-tall Emperor penguin of Antarctica may be the most iconic member of this unique family of birds, but 17 other ...

Some Argentinian penguins are experiencing high levels of predation from pumas recolonising their historical territory. A new study has quantified the risk on long-term penguin population survival.

A natural experiment in a national park in Patagonia shows how the return of a large predator can reshape an ecosystem. Long absent from Argentinian Patagonia due to over-hunting, pumas have returned ...

EDITOR’S NOTE: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...