John Hargrove says he left SeaWorld after seeing "devastating effects of captivity" on orcas. His new book is <em>Beneath The Surface</em>. SeaWorld disputes such claims and says it treats whales with respect.
<strong></strong>The hormone that controls blood sugar among diabetics is one of the oldest medicines used today. But more than 90 years after its discovery, a low-cost version is no longer available in the U.S.