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Christiane Amanpour leads discussions about world issues and interviews with global leaders.

Onsite extraction of fossils of an ichthyosaur, a fish lizard that ruled during the time of the dinosaurs, and a 3-D reconstruction of the creature; host David Attenborough.

Exploring the quantum universe.

Celebrities, cast members and Joanne Rogers recall their favorite moments from "Mr. Rogers' Neighborhood" as they celebrate the 50th anniversary of the series.

The story behind David Attenborough's wildlife documentary series "Life on Earth," which changed his life forever.

Arthur can't come up with a jingle for a cereal contest; D.W. struggles to do cartwheels as well as Emily.

Olive and Otto investigate why things are disappearing all around town; one of the four Debbies from Debbie's Pizzeria disappears.

Chris, Martin and Aviva need osprey creature powers to find keys that Jimmy dropped in the ocean.

The Hunter kids head to the state park to learn why leaves change color.

Lyla gets a strike her first time bowling but gets frustrated when she realizes bowling isn't as easy as she thought it was; Lyla feels left out when Everett and Ale's friendship thrives.

Carl doesn't know what to do when Nico falls; Carl learns a new word -- shindig.

Daniel gets mad when he doesn't get a crayon box right away at the Crayon Factory.

Phoebe learns what privacy signs are and how to use them to communicate to neighbors; Jay gets nervous about getting a haircut.

While watching baby dragons for the first time, Abby, Elmo and crew join voices for a soothing bedtime bop to make sure the little beasties go to sleep.

Zadie earns Junior EMT status and follows Ellie on her EMT calls; the Wombats bake a boat-shaped birthday cake.

Duck Duck learns how to fix her broken bookcase; Donkey welcomes Greeble the Treeble to Someplace Else.

Rosie puts on a concert when Tia is unable to get tickets to see her favorite singer; Rosie loses her first tooth, and prepares to welcome both the Tooth Fairy and the Tooth Mouse.

Elinor and her dad learn how to make their own chocolate; after accidentally breaking a jade plant, the kids learn how the plant grows.

Alma and Junior teach Uncle Nestor how to ride his first bike; Papi lets Alma go to the grocery store by herself.

Insider perspectives on the importance of the shipping industry with Anna Silva, manager of Cruise Ops at Port Everglades Terminal and Margaret Doyle, director of Transparensea Fuels.

Work is completed on a 2012 Challenger; work begins on a 1973 Barracuda; the crew works on a 1966 Nova.

Exploring the quantum universe.

Pioneers from Guatemala to Japan share space with wildlife and restore the way we coexist and cultivate among the trees.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

This daily news program, produced by Japanese public broadcaster NHK, focuses on headlines and current events in Japan and other Asian countries. English-speaking presenters also cover other areas of interest, including business news, science and technology trends, sports highlights, and global weather forecasts.

Presenting a round-up of the most recent news and developments from across the world.

Live news program produced out of BBC's Washington, D.C. bureau; host Sumi Somaskanda.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

Siena, Italy's, Palio horse race; Scottish Highland Games; Carnevale in Venice, Italy; celebrating Easter in Greece.

Highway 50, the "Loneliest Road in America"; Berlin-Ichthyosaur State Park; Spencer Hot Springs.

Conservation efforts to protect plant and animal life at Great Smoky Mountains National Park; photography captures misty mornings in Cades Cove and vibrant scenic trails.

Past and present collide when Father Brown investigates the macabre world of dollhouse crime scenes.