Desert Speaks

A River Again

New philosophy about mankind's changes to the environment suggests mod ified operation or even demolition of some dams. A picturesque dam in Arizona's Verde Valley is scheduled for removal within five years. For a look at what to expect, we travel to Pennsylvania to record a dam d emolition. The program also looks at Arizona's Glen Canyon Dam and how the flow is regulated to generate power and benefit biological resour ces at the same time.