Global warming is reducing sea ice coverage in Antarctica by 40% over the past 26 years, decreasing the penguins' food supply. This is putting multiple penguin species at risk of decline or extinction, including Emperor Penguins declining 50% over 50 years, Chinstrap Penguins decreasing 30-66% in some colonies, Gentoo Penguins facing food source reductions from overfishing, and Adelie Penguins declining 65% in 25 years. Actions are needed to address global warming through commitments like the Kyoto Protocol in order to protect penguin populations.