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Archaeological evidence suggests that the legend of King Arthur began in a 5th-century trading village following the departure of the Romans.

From pythons in Bangkok to otters in Singapore, a look at the extraordinary ways wildlife is making itself at home in the world's cities.

Panelists explore the challenges and dilemmas around online sports gambling and its impact on young men.

Research into the ancestry of singer Lea Salonga and actress Amanda Seyfried reveals relatives who survived heart-wrenching ordeals.

D.W. and Bud take a wilderness adventure; Ladonna is determined to experience all the activities fall has to offer.

Ozzie is torn between solving oddness or helping Opie, who has been promoted to Head of the Department of Help; Ozzie has Bad-luck-itis.

The Wild Kratts use Aviva's Time Trampoline again, this time to visit the extinct Tasmanian Tiger.

The Hunters learn how temperatures can affect outdoor plants and gardens.

Lyla and a new friend build a spaceship; Lyla learns her sisters can predict what the other wants, so she tries to do the same with Luke.

Carl and Nico argue over who gets Arugula as their magician's assistant; Sheldon tries to help Carl become a good listener.

Daniel and Dad help Prince Tuesday at the market; Daniel is excited to plant flowers but is upset when he has to do the weeding.

Phoebe and Jay use Miss Jean's field guide to identify their new butterfly friend; Phoebe gets courage to perform at the talent show.

While Abby and Elmo work together to find a lost Bubble Bug, Grover and Cookie Monster stay behind to take care of the fairy garden's magical beasties.

Mr. E learns a dance for Friendship Day; Super, the Wombats and the Boo Boo Blimp to the rescue when the power goes out for the Friendship Daylight Show.

Duck enjoys "me time" at the beach; the pals like different things at Donkey's sleepover.

It's Recycling Day, so Rosie becomes a recycling kid, but she accidentally recycles Crystal's art project; when Rosie and Javi find a monarch butterfly in the backyard, they try to figure out what it needs so it can flutter again.

While observing butterflies and caterpillars, the kids realize they've never seen a baby butterfly; Elinor, Ari and Olive put on a circus for their friends.

Alma and Rafia try to give away rubber bands; Alma and Rafia think they've invited too many people to Safina's bake sale.

Sidney and Geordie stumble upon a murder while on holiday in London.

Bella attempts to get her new business off the ground; an old enemy visits Cecil.

Animal parents become masters of their environment in order to raise their young in the complex jungle; an orangutan spends eight years teaching her baby the ways of jungle living; a crab creates the perfect home for her crablets.

New evidence sheds light on Turkey's Gobekli Tepe, the world's oldest temple, and how archaeologists think about the roots of civilization.

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

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

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

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

Pauline, a plucky Super Ager from Erie, Pennsylvania lives her 102nd and 103rd years on camera, revealing the power that family, faith, purpose, a sense of humor and some good genetics play in a long, well-lived life.

Building a backyard brick patio; new floors; weaving in salvaged floor strips with the original flooring.

Preventing sink drain clogs; how to test for lead-based paint; installing granite hillside steps.

Documents reveal how Edward VIII was involved in a plan to reinstate himself as monarch in the event of a Nazi victory in World War II.

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

Pauline, a plucky Super Ager from Erie, Pennsylvania lives her 102nd and 103rd years on camera, revealing the power that family, faith, purpose, a sense of humor and some good genetics play in a long, well-lived life.