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Cutting-edge research, news, commentary, and visuals from the Science family of journals. Follow @NewsfromScience for stories from our News team.
Washington, DC & Cambridge, UK
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    Aug 13
    Long before intensive human fishing began, Pacific reefs naturally supported far more sharks than Caribbean reefs, according to a new Science study. The findings, based on an analysis of fossilized shark scales, suggest that differences in ocean productivity—and not fishing
    This scanning electron microscope image shows a dermal denticle from a great hammerhead shark (Sphyrna mokarran). Ridges and other features on these toothlike scales reduce drag in fast-swimming sharks. Denticles are shed and preserve in marine sediments, recording past shark assemblages. Fossil denticles from Panama show that Pacific reefs supported 20 times as many sharks as Caribbean reefs before human exploitation and that Caribbean populations have since declined by 75%. Credit: Erin Dillon and Jorge Isaac Ceballos
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    Although omega fatty acids are famous for their health benefits, new @scisignal experiments in mice show that some omega fatty acids can suppress the cancer-killing capabilities of natural killer cells by acting through a receptor named LRP5. scim.ag/4czhy0V
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    Modern bison herds are far more genetically isolated than their ancestors, according to a new study in Science. The findings suggest that reconnecting fragmented herds could help restore historical gene flow and strengthen bison resilience to future environmental change.
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    Do your biceps turn heads? Do your pecs impress? If so, brawny reader, you may have your Neanderthal ancestry to thank for it. In a new study, scientists identify a gene variant associated with human growth hormone that probably made our close evolutionary cousins stockier and
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