When we think Mexican booze, tequila and limey beers come to mind. But people have been producing wine there for hundreds of years, ever since Spanish missionaries first brought grapes to the country in the 1500s. Meet the Godfather and Godmother of Valle de Guadalupe, an arid region near the coast of Baja known for its marine flavors and rocky soil. Valle’s wine renaissance has breathed life into the valley's economy and brought it worldwide attention. But in such a fragile ecosystem—the attention comes at a cost.