Follow three sisters who have left polygamy and now help others break free from the often dangerous and abusive lifestyle.

Officers of The U.S. Fish and Wildlife Service conserve and protect the natural wonders of National Wildlife Refuges in Alaska.

In this unique take on British history, Professor Alice Roberts explores Britain’s rich and varied past through the stories of individual towns and cities. In each programme Alice studies one key period in history by delving into the secrets of a historic town that encapsulates the era, providing an accurate impression of what life was really like at key moments in our turbulent past. At the climax of each programme, cutting-edge CGI reveals the entire historic town in all its former glory.

A wise old leopard is challenged by a young rival; a lion cub struggles to find his place in the pride; and a lowly young hyena needs to grow up fast as the dry season takes hold. Powerful, personal stories will reveal the unique characters and amazing adaptations of Africa’s top predators, followed in intimate detail, in the Zambian wilderness.

With the explosion of infographics and big data, maps aren’t just about geography anymore. They can tell us all kinds of things about the human experience. National Geographic Channel’s new series “The Big Picture With Kal Penn” is all about finding the unexpected — and sometimes surprising — realities in both the world at large and our own backyard, revealed by crunching the numbers and finding new ways to visualize data. Host and producer Kal Penn is taking viewers on a journey to understand how things like money, sex, food, sports and crime influence our daily lives. Exploring and generating infographics from information banks and data analyses, we investigate different themes through the mapping of new data, the creative visualization of information, and in-depth personal stories with fascinating characters.

Dogfights is a military aviation themed TV series depicting historical re-enactments of air-to-air combat that took place in World War I, World War II, the Korean War, and the Vietnam War, as well as smaller conflicts such as the Gulf War and the Six-Day War. The program, which airs on the History Channel, consists of former fighter pilots sharing their stories of actual dogfights in which they took part, and uses computer-generated imagery to give the viewer a better perspective of what it is like to partake in aerial combat The series premiered on November 3, 2006.

Showcasing the most compelling crimes of yesteryear, when secrets festered, passions ran wild and cops had nothing but shoe-leather and gut instinct to catch a killer. Fashions may change but murder never goes out of style.

In an instant, life can change forever and that moment will define who you are. More than just a retelling of heart pounding first-person accounts of the world’s most harrowing tales of survival, these tales are brought to life with breathtaking dramatizations of the moment before and after life was forever changed.

Science journalist and qualified doctor Michael Mosley along with a team of doctors investigate health issues and provide definitive answers.

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Based on the popular BBC series running since 1979, the PBS Antiques Roadshow combines history with discovery. Each year, the show visits a handful of cities to appraise items brought in by viewers. Are these items worth a lot of money, more than the visitors expect?

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