Specialists Evan Solomon works on the floor of the New York Stock Exchange on Wednesday, when major stock indexes fell steeply. Richard Drew/AP hide caption

An infant and his mother demonstrate electroencephalography, or EEG, technology at Children's Hospital Boston. The technology could help detect the risk of autism in infants. Courtesy of Michael Carroll hide caption

Former Olympian Gary Morgan runs on a treadmill atop an overturned tank in Track and Field, by Jennifer Allora and Guillermo Calzadilla. The piece is part of the American Pavilion at the Venice Biennale. Tascha Horowitz/Courtesy of the Indianapolis Museum of Art hide caption