Catalyst: Wildlife migration corridors

Biologists install digital cameras and microphones around wild habitats to observe where endangered animals migrate. By mapping wildlife movements conservationists can advise governments how to build infrastructure that protects biodiversity.

WATCH: See more from season 2 of “Catalyst”

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Catalyst: Acoustic Ecology Lab

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Andy Martinez

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American Experience “Roberto Clemente”

Roberto Clemente warming up to bat

“Roberto Clemente,” a documentary about an exceptional baseball player and committed humanitarian who challenged racial discrimination to become baseball’s first Latino superstar.

Walt Richardson

Walt Richardson playing guitar and singing into a microphone on the set of Playlist 48

Singer/songwriter Walt Richardson visited Arizona PBS to perform and talk about his love for guitar and performing.

Nova “Alaskan Dinosaurs”

NOVA Dinosaurs

A team of intrepid paleontologists discovers that dinosaurs thrived in the unlikeliest of places—the cold and dark of winter in the Arctic Circle.