Tens of millions of Americans take nutritional supplements. New studies allege some pills do not contain what is on the label. Other research indicates consumers may be ingesting too many vitamins. New concerns about dietary supplements.
American scientist Andrea Turkalo has spent most of the past 12 years deep in the forests of the Central African Republic, studying wild elephants. Andrea Turkalo joins Diane to talk about what she’s learned from her close observations of the rare forest elephants.
- Andrea Turkalo Author and Scientist
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