It's the brain's own virtual reality.
We went to the Virtual Reality Los Angeles Spring Expo to find out.
Christopher Nolan doesn't care about Gotham City, or any city.
h3. ONE: New leukemia "treatment exceeds 'wildest expectations'":http://www.cbsnews.com/stories/2011/08/10/eveningnews/main20090911.shtml (CBS) h3. ZERO: London girl rioters bragging about their conquests and "'showing the rich we do what we want...