Also in this episode:

Catalyst: Racing against infectious diseases

Catalyst: inclusion and exclusion bias

Catalyst: Recycled asphalt

In this segment:

Rob Gray, Ph.D. associate professor and program chair, Human Systems Engineering

Catalyst: Recycled asphalt
Catalyst: Closer look at asteroid Bennu
Sign up to receive the Arizona PBS Insider

Get up-to-the-minute information about your favorite programs and learn more about Arizona PBS news and events.

ASU on Arizona PBS
Life and Science main page
Ring in the new year with the New York and Vienna Philharmonic

The New York Philharmonic and guest vocalist Katrina Lenk (“The Band’s Visit”) celebrate the orchestral music of Stephen Sondheim, performing suites from "Sunday in the Park," "Into the Woods," "Sweeney Todd,” and more.

'Nature' explores the wild on Wednesday nights

From the remarkable octopus to a river of dreams, experience compelling stories of the natural world as "Nature" returns to Arizona PBS Wednesday nights at 7 p.m.

Animals take flight in 'Supernature - Wild Flyers'

The sky is one of the world’s most challenging places to thrive, but across the planet an extraordinary and unexpected range of animals does something we can only dream of – taking flight.