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Touring three of London's palaces -- the Tower of London, Hampton Court and Kensington Palace; host Lucy Worsley.

An inside look at Wolf Hall, the Seymour family seat in Wiltshire, England.

Exploring Iceland's rugged and unique landscapes, from icebergs on black sand at Diamond Beach to a fresh lava field.

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

Twenty-four hours a day, the latest national and international stories as they break.

Brain, D.W. and Bud explore the inner workings of the brain; Brain may finally see a meteor shower.

Ozzi and Orli go on a mission to catch the villain who is ruining the Triangle Sisters' café; Opie must collect enough money to pay for Captain O's 10-layer birthday cake.

Aviva and Koki are accidentally miniaturized and carried away by termites.

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

Lyla and Ale make an escape-proof container for her pet tarantula; rain keeps the kids inside, so they recreate park activities indoors.

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

Daniel is upset when Miss Elaina declares she doesn't like egg salad; Daniel and Prince Wednesday learn they should be kind to each other, even if they disagree.

Phoebe and Jay learn how to sort items; Phoebe and Jay learn how to make food labels, so everyone can participate in the potluck.

Elmo, Chris and their friends on Sesame Street dress up as dinosaurs; with help from Elmo's book, they learn facts about dinosaurs.

Zadie and JunJun find multiple new uses for Sparkle Pants; Zadie, Cece, Clyde and Carly must find a game they can all play together that is fun for everyone.

Duck's magic trick goes awry, turning her neighbors' things into pickles; Donkey is afraid to scooter after a fall.

Rosie takes Mom out for Mother's Day; Crystal takes the kids to the merry-go-round at the amusement park.

While painting outdoors, Elinor and her class experiment with natural items that they find after they run out of paint; Elinor, Ari and Olive help Mrs. Hippo pick up litter.

Alma tries to keep her new cleats clean; Alma upsets her friends by changing the rules.

While doing their annual Laundry Day, the Kratt brothers disagree on what is better -- blue oceans or green forests.

A stop at Castle Farms features a WWII painted A-2 flight jacket, a John Bailey dwarf clock circa 1800 and a 1973 Charles Schulz-signed drawing and book.

Annika and the team are sent to Edinburgh to investigate the death of a former prisoner whose body is pulled out of the Forth River.

The professor is a suspect when his rival colleague is murdered at a criminology conference; Professor T must prove his innocence and find the murderer so he can regain his reputation and return to his job at the university.

A daily news summary from Europe with anchor Brent Goff.

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.

A death at the university plunges Geordie and Alphy into a world of academic adversaries, while Alphy faces a romantic complication.

Stonemason Andrew Knightley is pushed under a London Underground train during the morning rush hour; DI Max Arnold and his partner, DS Priya Shamsie, together build a picture of a lonely, devout, and troubled man, but the killer is flesh and blood.

Alexa's investigation into the death of a surfing champion brings her to an old childhood haunt.

On this episode, you'll meet Jesse Williams, a sweet soul and incredible guitarist from Dahlonega, and the Grammy-award winning singer-songwriter Jordan L'Oreal from Atlanta.

Discovering Brahms' private world in Germany, including his personal photo collection and a visit to his summer hideaway.

Now undercover, Vivien tries to convince neo-Nazi leader Colin Jordan that she is on his side; Vivien's spying turns up an alarming development.

Stonemason Andrew Knightley is pushed under a London Underground train during the morning rush hour; DI Max Arnold and his partner, DS Priya Shamsie, together build a picture of a lonely, devout, and troubled man, but the killer is flesh and blood.

Alexa's investigation into the death of a surfing champion brings her to an old childhood haunt.