Rubio, seen here addressing the National Press Club in May, told NPR he'll decide on a presidential run in the next few months Alex Wong/Getty hide caption

Sylvester Jusu is a volunteer who works with the Red Cross burial team in Sierra Leone. Tommy Trenchard for NPR hide caption

Members of the Bird Ambassadors program painted and planted a broken canoe at a Baltimore charter school in November. The canoe was filled with species native to Maryland, providing food and habitat for local birds. Susie Creamer/Courtesy of Patterson Park Audubon Center hide caption

General Mills' original Cheerios are now GMO-free. But you won't find a label on the box highlighting the change. David Duprey/AP hide caption

Over the last dozen years, whistleblowers at the National Security Agency have had a rough track record, facing FBI raids and lawsuits. NSA/Reuters/Landov hide caption

Officer Michael Crowder says his roots are too deep to leave Detroit, but he knows younger officers who were lured away by better pay. Dawn Uhl-Zifilippo hide caption

Albert Paley's iron and steel gates, archways and free-standing sculptures are eye-catching landmarks. His 2010 steel work Evanesce stands in Monterrey, Mexico. "American Metal: The Art of Albert Paley" is on display at the Corcoran Gallery of Art until September. Agencia para la Planeacióndel Desarrollo Urbano de Nuevo León/Courtesy Paley Studios hide caption