Catalyst: Plastics and fertilizer in our oceans

“Catalyst” examines two major issues affecting the health of the world’s oceans: plastics and fertilizer.

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In this segment:

Charlie Rolsky

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Antiques Roadshow “Celebrating Latino Heritage”

ANTIQUES ROADSHOW airs Monday, June 28, at 7 p.m. and is produced by GBH for PBS. The series is seen by around 7 million viewers each week.

American Experience “The Polio Crusade”

Discover the story of a disease that gripped the nation in fear, leaving thousands paralyzed - and the ardent crusader who fought against it.

Vera “Dark Road”

Airing Saturday, June 26 at 9 p.m. Vera investigates the mysterious death of Anne-Marie Richards, whose body is discovered on the wild and desolate Northumberland moors.