The latest research into the link between germs and mental illness -- and what we all need to know.
With just six weeks to go before the first ballots are cast in the Iowa Caususes, we look at where the candidates stand on the issues, the latest polls and whether voters are learning or not learning about the candidates from the many debates.
- E.J. Dionne Jr. senior fellow at The Brookings Institution, Washington Post columnist, and author of "Souled Out: Reclaiming Faith and Politics After the Religious Right" and of "Stand Up Fight Back."
- Stuart Rothenberg editor and publisher of the Rothenberg Political Report
- Norman Ornstein is resident scholar at the American Enterprise Institute; coauthor with Thomas Mann of "The Broken Branch: How Congress Is Failing America and How to Get It Back on Track."
- Richard Kimball President of Project Vote Smart
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