Relive the forgotten story of how our ozone layer was saved

Discover the forgotten story of the hole in the ozone layer and how the world came together to fix it.

Watch “Ozone Hole: How We Saved the Planet” on Wednesday, April 9, at 9:30 p.m. on Arizona PBS. Hear from the scientists and politicians who persuaded Ronald Reagan and Margaret Thatcher to take action and solve this planetary problem.

Scientists in the 1980s concluded it was not global warming, but a seemingly benign industrial chemicals called chlorofluorocarbons (CFCs) that were developed in the 1920s and used in everyday products from hairspray to deodorant. If continued unchecked, the world faced a perilous future, one in which humans would be forced to hide from daylight due to the harmful unfiltered UV radiation, and one where agriculture and entire ecosystems would collapse.

The hourlong documentary tells the incredible true story of how scientists and the administrations of two unlikely eco-friendly world leaders — Ronald Reagan (a skin cancer survivor) and Margaret Thatcher (a chemist by trade) — successfully worked together to prevent an environmental catastrophe.

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Explore the complicated history of African-American entrepreneurship in America

The history of business and entrepreneurship lies at the heart of the American story, but often absent from that narrative are the experiences of African Americans. "Boss: The Black Experience in Business" tells some of those forgotten stories and trends Tuesday, April 23, at 7 p.m. on Arizona PBS.

'Nature' welcomes spring's rejuvenation Wednesday nights

From the perfect egg to the blossoming of spring, experience compelling stories of the natural world as "Nature" returns to Arizona PBS Wednesday nights at 7 p.m.

PBS KIDS celebrates Earth month with new episodes, activities

Enjoy a special week of adventures from "Wild Kratts," "Nature Cat" and "Ready Jet Go!" beginning April 15.