A couple enjoys the view of Singapore's financial center. Conservatives saw Singapore as a free-market success story, but Lee Kuan Yew's government played a big role in the economy. Wong Maye-E/AP hide caption

itoggle caption Wong Maye-E/AP

A riot late last month forced officials to close the Willacy County Correcitonal Center in Wallcy County, Texas. John Burnett/NPR hide caption

itoggle caption John Burnett/NPR

Known by the nickname "Wall Street," Curtis Carroll teaches financial literacy at the San Quentin Prison, helping inmates prepare for life after incarceration. Carroll, however, is serving a life sentence. Courtest of The California Department of Corrections and Rehabilitation hide caption

itoggle caption Courtest of The California Department of Corrections and Rehabilitation

"There hasn't been a change of the portraits since 1929 ... it's time to bring our money into the 21st century," says Susan Ades Stone, spokeswoman for Women on 20s. iStockPhoto hide caption

itoggle caption iStockPhoto

A sales assistant arranges handbags inside a Chanel boutique at a shopping mall in central Guangzhou, China, in February 2014. Alex Lee/Reuters/Landov hide caption

itoggle caption Alex Lee/Reuters/Landov