Resumen de The science of sports.

• The article presents scientific information relevant to sports and athleticism. Topics include how gravity affects the way athletes train, the engineering of athletic equipment designed to minimize forces like air resistance, and information on the aerodynamics of sports balls, including how soccer player David Beckham curves free kicks and how tennis players can serve balls at up to 160 miles per hour. Additional information is presented on how football helmet manufacturers are redesigning equipment to reduce the incidence of disorders like chronic traumatic encephalopathy.