PNAS Science Sessions

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50 years of DNA cloning

Stanley Cohen reflects on the 50-year legacy of a classic PNAS paper on recombinant DNA.

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  Air pollution and pet health

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  Probing the die-off of Pacific oysters

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  Swamp lights and bat sight

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  Enzyme linked with brain evolution

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  Where primates evolved

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  How climate change alters lake oxygen levels

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  Unpacking the unreturnable squash nick shot

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  North America's oldest pterosaur fossil

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  Exploring the origins of a glacial relict seal

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  Conservation of the Eastern Black Rhinoceros

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  Rescuing the northern white rhino

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  Water and the possibility of life on Mars

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  Machine learning and climate risk adaptation

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  Parsing the Knowledge of London cabbies

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  Individual decision-making and collective animal behavior

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  Modeling extreme heat waves