Arthritis is a joint disease that can cause cartilage destruction and erosion of the bone, as well as tendon inflammation and rupture. Affected areas are highlighted in red in this enhanced X-ray.
Philippe Sellem/Paul Demri/ Voisin/Science Source
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Even after a Harvard team took into account differences in age and weight among ancient specimens and knees today, they found that modern humans tend to have more osteoarthritis.
Arthritis is a joint disease that can cause cartilage destruction and erosion of the bone, as well as tendon inflammation and rupture. Affected areas are highlighted in red in this enhanced X-ray.
Philippe Sellem/Paul Demri/ Voisin/Science Source
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Books at Amazon's New York City store are shelved with the covers facing out and organized around features that originated on the website, including "Most Wished For" and "Customers Who Bought This Item Also Bought."
Timothy A. Clary/AFP/Getty Images
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David Brown of Plymouth, Mass., sends a message during a protest Sunday, held in response to a white nationalist rally that spiraled into deadly violence in Charlottesville, Va., the day before.
Steven Senne/AP
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Michelle Labra and her daughter, Daphne, live in an accessory dwelling unit (ADU) in their landlord's backyard. Portland has among the most permissive rules for ADUs in the country. Last year, the city issued building permits for about one a day.
Amelia Templeton/OPB
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President Trump meets with Mexican President Enrique Peña Nieto at the Group of 20 summit in Hamburg, Germany, in July. Trump is pushing to renegotiate the North American Free Trade Agreement among their countries and Canada.
Evan Vucci/AP
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