 Go find the rats. Here near George Washington University's campus, groups of D.C. residents and workers are searching parks for holes that rodents may be using to get around. Can you see it with all the dirt is dug out right there? It's part of D.C.'s Rodent Control Academy. So it's this ironic business of if we could deny them food by doing our trash better, we could deny the population from exploding. Dr. Bobby Corrigan is an urban rodentologist, and yes, that's his real title.