What's PET? How should you recycle plastic bottled water containers? What happens to those empty bottles once they're sent off for recycling? Hear those answers and more, as we speak with special guest Laura Stewart of the National Association for PET Container Resources (NAPCOR).

How important is it to drink water instead of sugary sweetened beverages? Find out in this episode about healthy hydration with guest Dr. Harold Goldstein, executive director of the California-based Public Health Advocates.

In this first episode of "H20 In the Know," we talk with bottled water science, technical, and education expert, Bob Hirst, about facts you may or may not know about bottled water.