A rebel attack on Yemen's capital throws the country into crisis. U.S. lawmakers renew calls for sanctions against Iran. And American and Cuban officials meet in Havana for the first time in decades. A panel of journalists joins guest host Susan Page for analysis of the week's top international news stories.
Doctors and researchers discuss the benefits and risks of vitamin D and why some Americans may not be getting enough of it.
- Joan Lappe professor of nursing and medicine at the Creighton University School of Medicine and investigator with Creighton's Osteoporosis Research Center.
- Joan McGowan Director, Musculoskeletal Diseases Branch and the Bone Diseases Program at the National Institute of Arthritis and Musculoskeletal and Skin Diseases.
- Paul Coates Director, Office of Dietary Supplements, National Institutes of Health
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