A cross-section of skeletal muscle in this light micrograph shows the individual, parallel muscle fibers (red). These fibers work in concert to power movement.
Thomas Deerinck, NCMIR/ScienceSource
Oklahoma Gov. Mary Fallin issues a statement to the media after the execution of Clayton Lockett. Oklahoma Secretary of Safety and Security Michael C. Thompson stands behind her at the Oklahoma State Capitol in Oklahoma City.
Loved ones express their grief at the burial of Ramon Romero Ramirez in Chichigalpa, Nicaragua, January 2013. The 36-year-old died of chronic kidney disease after working in the sugar cane fields for 12 years. Ramirez is part of a steady procession of deaths among cane workers.
Mike Smith, of Long Beach, Calif., now pays $200 for his family's health insurance policy, compared with the $3,000 a month he would have had to pay on the individual market last year.
Stephanie O'Neill for NPR