March 31 at 8pm — Tune in or stream with the PBS app and online at video.lptv.org. The story of the polio crusade pays tribute to a time when Americans banded together to conquer a terrible disease. The medical breakthrough saved countless lives and had a pervasive impact on American philanthropy that continues to be felt today.

April 1 at 7pm — Tune in or stream with the PBS app and online at video.lptv.org. In the crystal-clear waters of the Caribbean, Cuba is an island teeming with exotic biodiversity: from coral reefs pulsating with life to five-foot-long Cuban rock iguanas. As international relations ease, what will become of this wildlife sanctuary?

Your Legislators is a live one-hour public affairs program produced for public television stations serving the citizens of Minnesota.

April 4 at 9pm — Tune in or stream with the PBS app and online at video.lptv.org. Jonathan Antoine had two No. 1 albums on the U.K. classical charts by the age of 20. Discover his journey from a shy 17-year-old facing Simon Cowell on “Britain’s Got Talent” to a virtuosic tenor. Jonathan is joined onstage by an orchestra, choir, a cappella group and acclaimed cellist Tina Guo for a medley of Disney classics, Broadway numbers and opera standards.