A wild horse roams on the beach without regard to campers at Assateague Island National Seashore, Maryland. Kristen Wyatt/AP hide caption

A wildlife biologist was flying over the Arctic on a routine whale survey when his team spotted dead polar bears in the water. The researcher's report on the observations raised public alarm about the threat of climate change, he's now under an official investigation. Above, a polar bear walks on the frozen tundra on the edge of Hudson Bay on Nov. 14, 2007. Paul J. Richards/AFP/Getty Images hide caption

Russell Zanca, 47, of Chicago, is selling his three-bedroom house despite the uncertainty in the housing market. David Schaper/NPR hide caption

Students leave after the day's classes at Emma Hutchinson School, which has been identified as one of 44 schools involved in a test cheating scandal. Investigators have concluded that nearly half the city's schools allowed cheating to go unchecked for as long as a decade, beginning in 2001. John Bazemore/AP hide caption

Larry Barnard fills his car with gasoline at an Exxon station in Farmers Branch, Texas, on June 30. Tony Gutierrez/AP hide caption

Former Michigan State football player Charles Aaron "Bubba" Smith raises his arms during a 2006 ceremony at which his jersey number was retired. Smith died at his home in Los Angeles on Aug. 3. John Gwillim/AP hide caption

Success hasn't come easily for Noah and the Whale, whose sound has changed constantly from album to album. Courtesy of the artist hide caption