Who is Rick Perry? What is Texas really like? And what's the role of religion in this year's Republican presidential nomination? We look for answers. Also, economic indicators are flashing red, and a new drug that helps obese mice might slow the pace of human aging.
Banner image: Republican presidential candidate and Texas Governor Rick Perry speaks to visitors at the Iowa State Fair August 15, 2011 in Des Moines, Iowa. Photo by Scott Olson/Getty Images