The population of emperor penguins in one part of Antarctica appears to be declining faster than previously thought, according to a new analysis of satellite imagery released Tuesday. The ...

Satellite photos show emperor penguins in one region of Antarctica declined 22% in the past 15 years.

Satellite photos show emperor penguins in one region of Antarctica declined 22% in the past 15 years. That's significantly faster than prior estimates of their decline due to climate change.