PBS television services from KTNWDT-TV, 31, Yakima, WA.

Yakima, WA KTNW PBS 31 A3 HD

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Exploring the origins of mammals, long before the age of dinosaurs, and how early ancestors survived global catastrophes and defied extinction to evolve into the vast array of mammals we know today.

NOVA

Mammal Origins

PBS, with more than 330 member stations, offers all Americans the opportunity to experience the worlds of science, history, nature and public affairs; to hear diverse viewpoints; and to take front row seats to world-class drama and performances.

Scientists conduct the largest animal communication study in history to see if innovative word buttons truly enable dogs to talk.

Can Dogs Talk?

New evidence sheds lights on the life and mysterious collapse of Cambodia's ancient jungle city.

Angkor: Hidden Jungle Empire

A look at whether giant asteroid impacts were actually essential for the creation of life on Earth.

Asteroids: Spark of Life?

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S53 E1 | Asteroids: Spark of Life?