Deserts

March 18, 2012, 9am PDT
Emma Marris reviews a new book by Andrew Ross, a cultural critic at New York University, that tries to understand how Phoenix came to be what it is, and determine whether there's any way it can be turned around.
OnEarth
August 20, 2011, 7am PDT
A recent art project in Peru utilizes a robotic vehicle to trace a scale outline of a city into the empty desert, raising questions about urbanization in deserts and the formation of cities.
We Make Money Not Art
August 20, 2009, 5am PDT
A new report estimates that desertification will expand up to 34% during the next century, enveloping an area the size of the United States.
Discovery