Cholita, an Andean bear, was abused in a circus in Peru and is now in a small zoo. An animal welfare group has now received permission to take Cholita to a wildlife sanctuary in Colorado, along with more than 30 former circus lions. Courtesy of Animal Defenders International hide caption

Google is doing test flights of its balloons carrying Internet routers around the world. Last June, a balloon was released at the airport in Teresina, Brazil. Google hide caption

In The Shame In Venice 2, Kenyan artist Michael Soi protests the makeup of his country's pavilion at the Biennale. Courtesy of Michael Soi hide caption

Homeowners sit in a conference room in Detroit's Cobo Center while waiting for their cases to be heard to avoid foreclosure from tax debts in Detroit on Jan. 29. This year, Wayne County officials sent out 62,000 foreclosure notices to city homeowners behind on property taxes. Paul Sancya/AP hide caption

Smart phones contain a silicon chip inside the camera that might be used to detect rare, high energy particles from outer space. J. Yang/Courtesy of WIPAC hide caption

At Nashville's Bailey Middle Prep, Whitney Bradley teaches her 8th-graders how to organize an essay in preparation for the writing section of Tennessee's standardized test. Most in her class trail their peers in literacy. Blake Farmer/Nashville Public Radio hide caption