Humans

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We summarize the week's scientific breakthroughs every Thursday.

  1. Health & Medicine

    Limiting global warming to 1.5 degrees C could prevent thousands of deaths in the U.S.

    A study projecting heat-related mortality in 15 U.S. cities illustrates urban risk from global warming.

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  2. Anthropology

    Hominids may have been cutting-edge tool makers 2.6 million years ago

    Contested finds point to a sharp shift in toolmaking by early members of the Homo genus.

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  3. Life

    Gut bacteria may change the way many drugs work in the body

    A new survey of interactions between microbes and medications suggests that gut bacteria play a crucial role in how the body processes drugs.

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  4. Archaeology

    Cave debris may be the oldest known example of people eating starch

    Charred material found in South Africa puts energy-rich roots and tubers on Stone Age menus, long before farming began.

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  5. Health & Medicine

    A fungus weaponized with a spider toxin can kill malaria mosquitoes

    In controlled field experiments in Burkina Faso, a genetically engineered fungus reduced numbers of insecticide-resistant mosquitoes that can carry malaria.

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  6. Anthropology

    Africa’s first herders spread pastoralism by mating with foragers

    DNA unveils long-ago hookups between early pastoralists and native hunter-gatherers in Africa.

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  7. Chemistry

    Vaping the sweetener sucralose may produce toxic chemicals

    Sucralose in e-liquids can break down, increasing toxic aldehydes in vapors and producing harmful organochlorines, including a potential carcinogen.

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  8. Health & Medicine

    Resurgence of measles is a tale as old as human history

    Editor in Chief Nancy Shute discusses the recent global measles outbreak and the history of the spread of pathogens.

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  9. Health & Medicine

    One number can help explain why measles is so contagious

    The basic reproduction number, or "R naught," of measles shows how contagious the disease is compared with other pathogens.

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  10. Life

    How bacteria nearly killed by antibiotics can recover — and gain resistance

    A pump protein can keep bacteria alive long enough for the microbes to develop antibiotic resistance.

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  11. Health & Medicine

    Being bilingual is great. But it may not boost some brain functions

    A large study of U.S. bilingual children didn’t turn up obvious benefits in abilities to ignore distractions or switch quickly between tasks.

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  12. Health & Medicine

    Faulty cellular antennae may cause a heart valve disorder

    Mitral valve prolapse might be caused by dysfunctional primary cilia meant to signal cells during development.

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