Catalyst: Improved crops could lead to cleaner oceans

How can changing the root systems of our crops improve the health of the world’s oceans? “Catalyst” finds one Arizona State University scientist has discovered that stronger roots may be part of the answer.

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In this segment:

Roberto Gaxiola

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The mystery and suspense of 'The Woman in White' comes to Arizona PBS

A random encounter on the side of the road leads to a man's world being turned upside down in "The Woman in White," coming Sundays at 9 p.m. 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.

Elemental: Covering Sustainability

Elemental: Covering Sustainability is a multimedia collaboration covering urbanization, climate change, water and renewable energy.