Catalyst: Saguaro cactus

“Catalyst” follows a team of scientists who while sequencing the Saguaro cactus made a surprising discovery. “Catalyst” also joins a Saguaro fruit harvest in the Saguaro National Forest.

In this segment:

Martin Wojciechowski

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.

'POV' investigates Ebola survivors, campaign money and more this fall

New "POV" documentary investigations are airing on Arizona PBS on Monday nights this fall.

44th season of 'Austin City Limits' begins Oct. 6

Austin City Limits, the longest running music program in television history, is back for its 44th season every Saturday night at 11 p.m. beginning Oct. 6 on Arizona PBS.

'Poldark' returns for a fourth season

Poldark, season 4

"Poldark" returns to Masterpiece for a fourth season Sunday nights at 8 p.m. beginning Sept. 30 on Arizona PBS.