Global Warming Threatens Penguins

Adlie Penguin

An adult protects its nest along the western Antarctic Peninsula. In the last 25 years, the Adlie population has dropped
Steven Kazlowski / Science Faction / Corbis

Adélie Penguin
In the last 25 years, the Adélie population has dropped 65% due to a loss of sea ice and increased competition for food among other penguin species.

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