Naju Dorma, 73, and Lacuo Dorma, 66, belong to the Mosuo society in China, where grandmothers head up households. They're posing in traditional garb in their village of Luoshui.
While a day or two of complete rest may be necessary for kids after a concussion, any more could leave them feeling isolated and anxious, says Angela Lumba-Brown, a pediatric emergency medicine physician who helped shape new guidelines.
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A tsetse fly photographed in the zoological institute of the Slovak Academy of Sciences in Bratislava. Tsetse fly bites transmit the parasitic disease called sleeping sickness.
A McDonald's billboard in St. Paul, Minn., advertises in the Hmong language. A new study of first- and second-generation Hmong and Karen immigrants finds their gut microbiomes changed soon after moving to the U.S.
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Photographer Lorenzo Vitturi assembled this collage of products sold at the street market of Lagos Island, Nigeria, including the T-shirt that gave him the title for his new book: "Money Must Be Made."