'Honest Stores' sell tea -- and test a city's ethics. Who do you trust? L.A., New York, D.C., Boston? By Louisa Kasdon

The Tarlabasi market in Istanbul draws thousands each Sunday, but gentrification may close it. By Robyn Eckhardt and David Hagerman

Historic Gat Luang, one of Chiang Mai's richest market neighborhoods, is threatened by 'progress.' By Robyn Eckhardt and David Hagerman