FILE - Emperor penguin chicks stand together in Antarctica on Dec. 21, 2005. The loss of ice in a region near Antarctica's Bellingshausen Sea in 2022 likely resulted in none of the emperor penguin chicks surviving in four colonies in that area, researchers reported Thursday, Aug. 24, 2023, in Nature Communications Earth and Environment. (Zhang Zongtang/Xinhua via AP, File) NO SALES; FILE PHOTO

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