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Meet the winners and losers of climate change

By: Catie Leary on Oct. 23, 2015, 1:30 p.m.
Climate change winner... then loser: Chinstrap penguin

Photo: © Joel Sartore/National Geographic

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Winner ... then loser: Chinstrap penguin

Chinstraps prefer open to ice-choked waters, so in the past 50 years of fast-melting Antarctic ice, their population boomed. But now increasing ultraviolet light exposure is killing off the algae eaten by krill (the penguins' food source), and that means less krill for penguins to share with rebounding whale populations. Soon environmental change may beat tourism as the biggest threat to chinstraps.