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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Watch new episodes of ‘Plate & Pour’ every Thursday at 7 p.m.

Join Mark Tarbell as he takes you inside some of the most interesting places to eat.

New season of 'Antiques Roadshow' returns Monday nights in January

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'Victoria' Season 3: A fearless monarch faces down crisis

Victoria Season 3 on Masterpiece begins Sunday Jan. 13 at 8 p.m.

It is 1848, and revolution is breaking out across Europe. In Britain, one woman stands between order and chaos. Sundays at 8 p.m., beginning Jan. 13.