Our sense of what's dangerous on the road is not always accurate, according to Tom Vanderbilt, author of Traffic: Why We Drive The Way We Do. Take roundabouts: "People fear roundabouts in America — they've been called 'Circles of Death,' Vanderbilt says. "And nothing could be further from the truth."

A secretive fellowship of powerful Christian politicians includes some names that have recently been prominent in the headlines: Sen. John Ensign, Rep. Bart Stupak and Rep. Joe Pitts. Writer Jeff Sharlet describes the men's involvement with the Family, and discusses recent developments within the group.

With health care overhaul legislation set for action on Capitol Hill, all eyes are on the bottom line. But estimating the financial impact is incredibly complex and contentious. In search of clarity is Doug Elmendorf, the head of the Congressional Budget Office. Elmendorf discusses how his office puts a price tag on proposed bills, and his view of this latest health care effort.