When most people think of birds, they imagine tiny sparrows, colourful parrots, or pigeons sitting quietly on rooftops. But nature has another side that feels almost unreal. There are birds on Earth ...

Discover incredible snow animals thriving in Earth's coldest regions. From the Arctic's tusked Narwhal to Emperor Penguins ...

Greater protections for endangered emperor penguins and how to manage growing tourism are topping the agenda at talks on Antarctica in Japan.

Susan Rigetti is author of three books and a former editor at The New York Times and Slate. She is a contributing Globe Opinion writer. Emperor penguins have existed in Antarctica for more than 40 ...

From deep oceans to frozen Antarctica, these animal mothers go to unbelievable lengths to protect their babies.

Since satellites began monitoring the poles in the late 1970s, the seasonal growth and retreat of Antarctic sea ice – frozen seawater that expands around the continent each winter – appeared ...

A new study indicates that the adaptable birds evolved into distinct lineages as isolated populations shifted to match their ...

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 ...

No one — and I mean no one — saw the Pittsburgh Penguins fighting for their playoff lives in Game 4 of their first-round series against their archrival Philadelphia Flyers, but that's the deal. So, ...

Sidney Crosby was the most dangerous player on the ice in Game 5 despite not scoring a goal. Charles LeClaire / Imagn Images PITTSBURGH — Not long after the Pittsburgh Penguins had vacated their ...

The Pittsburgh Penguins' Big Three of Sidney Crosby, Evgeni Malkin and Kris Letang has been a huge part of the team's success with three Stanley Cup championships and nearly 4,000 games together. But ...