Changing public attitudes have led to a decline in U.S. soda sales. But health expert Marion Nestle believes many people still consume unhealthy amounts of sugary drinks. She argues beverage companies are spending millions on research that misleads consumers.
Recent claims of a successful human cloning have renewed interest in the scientific and ethical issues related to reproductive and research cloning. Diane talks with two scientists about cloning and some of the many related ethical questions.
- Dr. Leon Kass fellow, the American Enterprise Institute and author of a new book, "Life, Liberty and the Defense of Dignity"
- Dr. John Gearhart Director, Institute for Regenerative Medicine, at the University of Pennsylvania
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