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Broadway actors Leslie Odom Jr. and Nathan Lane explore their family histories.

The English National Ballet's production of Tchaikovsky's "The Nutcracker" features more than 100 dancers and musicians.

The astonishing and heartwarming story of George Lee, a pioneering Asian dancer who originated a featured role in George Balanchine's The Nutcracker ago as a teenage immigrant from China.

An investigation of Iran's nuclear program in the aftermath of the U.S. and Israeli strikes.

Creating flower animals; printing with flowers; arranging strawflowers on canvas; decorating shortbread cookies with pressed flowers.

Rick Steves takes a look at the sights outside of Amsterdam, from Haarlem, to Rotterdam, Delft and Zuiderzee.

Poses; flexibility; labor and delivery breathing.

A lower body workout combines standing and barre work to increase flexibility.

Zach Varmitech kidnaps a herd of walruses.

Dot and Al announce the Hunters are spending Christmas in Nigeria, and Corky wonders if she can have a fun Christmas without snow.

Lyla overcomes her fear of rock-climbing; a riddle game about everyday objects made by Black inventors.

Lotta is frustrated learning a new dance, but realizes it is ok to experience music in her own way; Sheldon worries about telling Carl that he doesn't want to play pirates anymore.

Mom helps Daniel be empathetic to someone else's feelings; Daniel helps Chrissie look for her lost bracelet.

Rosie is so excited to celebrate Christmas with abuela in Mexico City that she forgets to bring her present.

Elmo keeps practicing and does not give up until he learns how to play "Twinkle Twinkle Little Star" on his piano.

Zadie must face her fear and go to the barber for a haircut; Malik discovers smart devices have limitations.

Panda enjoys a snow day his own way; Bob Dog wants to win at Gameshow Gator's new snowy game.

Ms. Penny shows the class how to make origami stars; Pinkalicious and Kendra compete against Peter and Robotta in a scavenger hunt.

Junior Ranger Elinor and Ranger Rabbit's favorite forest spot is ruined by a fire; Ari is upset because Miri gets all the attention.

Rafia and Alma have trouble ice skating; Alma helps Junior find his missing tooth.

A heat wave hits Qyah and Molly is determined to find out the highest temperature on record; Molly and Trini must save Qyah from a wildflower.

Roberto Clemente encourages Xavier, Yadina and Brad to help however they can when the museum water fountain breaks on a hot day; Kristi Yamaguchi shows Yadina that it is ok to ask for help when learning how to roller skate.

Broadway actors Leslie Odom Jr. and Nathan Lane explore their family histories.

Four diverse young Jewish people celebrate their bar and bat mitzvahs in the same week.

Following the trajectory of the Academy Award-winning actress and singer Julie Andrews, with clips of her performances in "The Sound of Music," "My Fair Lady" and more.

A gold watch fob chain; a Glier violin and Pfretzschner bow circa 1880; Ellis-Stickley music cabinet.

A regular panel of guests from across the political spectrum discuss the biggest international stories of the day, along with news-making interviews and analysis from BBC correspondents around the globe.

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.

Animals such as reindeer, wolverines and brown bears survive in the tundra and forest of Lapland, the northernmost region of mainland Europe.

Paleontologist Kirk Johnson explores the polar extremes of the planet, including miles-high ice sheets and warm polar forests brimming with life.

Every year, up to 80 polar bears gather on the frozen shores of Barter Island on the Arctic coast of Alaska.

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

Animals such as reindeer, wolverines and brown bears survive in the tundra and forest of Lapland, the northernmost region of mainland Europe.

Paleontologist Kirk Johnson explores the polar extremes of the planet, including miles-high ice sheets and warm polar forests brimming with life.

Creating permanent arrangements featuring Southern magnolia; an arrangement made from toy building bricks.

Prague's massive castle, statue-lined bridge, Jewish Quarter and 20th-century history.

Breathing; relaxing; groin preparation for childbirth.

An all-standing mobility workout.

While searching for smallmouth and largemouth bass, Zach Varmitech challenges Martin and Chris to a fishing contest.

The Hunters investigate a weather mystery surrounding massive rocks that move on their own in the desert.

Lyla and Everett play basketball against their moms; Lyla and Luke restore their old toy car to make it special for Stu.

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

Daniel and Prince Wednesday are afraid to go sledding when they see the hill's height; Daniel dances in "The Nutcracker Ballet.".

Rosie and Javi transport a watermelon to the park for the family picnic; Rosie builds a dino cave for Iggy.

It's Opposite Day on Sesame Street and everyone's doing things that are as different as they can be; Bert and Ernie notice that everyone's having fun doing opposites and realize they like so many opposite things too.

Devonte J. Squirrel moves to the Treeborhood; Devonte and the Wombats create a machine that makes ice cream using a bike.

"The Hanukkah Problem" and "The Christmas Problem.".

The kids make their own instruments so they can participate in Senor Tapir's concert; when Elinor's dad falls asleep during a campout, the kids use flashlights to communicate to each other.

Alma tells on Emi when she's doing something dangerous; Alma's friends won't try Aaron and Lucas' snacks.

Molly rushes to find a new gift for her new friend, Kevin; Grandpa Nat's new drone is swept away by a dust devil.

Watching Julia Child follow a step-by-step recipe encourages Xavier to do the same to build a model airplane; Neil Armstrong inspires Yadina to try new things.

Animals such as reindeer, wolverines and brown bears survive in the tundra and forest of Lapland, the northernmost region of mainland Europe.

Exploring Scandinavia's wild and unpredictable coast, beginning around the Swedish Baltic Sea which includes fjords home to eagles, otters, base jumpers and orcas.

Exploring the Scandinavian forest, an ancient land shrouded in myth and legend; explore its animals, including wolves, lynx, osprey and reindeer.

Chinese carved walnut shells circa 1910; a Polyphon music box and poster circa 1895; a Tang dynasty ceramic horse.

A regular panel of guests from across the political spectrum discuss the biggest international stories of the day, along with news-making interviews and analysis from BBC correspondents around the globe.

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.

The Cathedral Choir sings Christmas carols from Saint John's Cathedral in Denver.

Stories about the people, places and events in Colorado's history.

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

The Cathedral Choir sings Christmas carols from Saint John's Cathedral in Denver.

Types of flower frogs that assist in arranging flowers; a beverage called the flower frog with recipes for coktail and mocktail versions.

A reunited Berlin entertains more visitors than ever before.

Using a wall and a chair to stretch; hip openers.

Stretches to strengthen the back and improve posture.

The brothers get swept up in the planktonic lifestyle when they go on a mission to understand the foundation of life in the ocean.

Benny becomes enamored with the mail carrier, and wonders how she delivers the mail in different weather conditions.

Lyla and her family must figure out a way to get Stu back home when he gets lost delivering cookies.

Carl surprises Sheldon with a lemonade stand, but is confused when Sheldon runs off; Carl's caterpillars turn into butterflies.

King Friday makes Daniel king for the day, and he learns that the most important part of the job is to be kind to his neighbors.

Rosie tries to make a snowy winter in the backyard for Mom; Lote falls in the river during a hike in a national park.

Sesame Street's Feelings Fair has games, crafts and food that are all about feelings; Elmo, Alan and Julia learn about feelings by looking at their friends' facial expressions.

The Wombats are excited for "Show and Tell" but Super might be too busy to attend; Louisa decides the Treeborhood needs a way to announce fun events.

Donkey and Panda save Rockstar Penguin's show when her band can't come; the pals help Turtle-Lou deliver packages.

Pinkalicious and Peterrific build a gingerbread house, but pieces of the house start to go missing; the Pinkerton family tries to get their Christmas spirit back after their ornaments break.

Elinor worries how her chickadee friend Chicky will find food during the winter; Elinor and her friends decide to give Senor Tapir a going away present.

Alma must learn a new way to celebrate when her family's Noche Buena traditions don't go as planned; Alma decides to make a do-over gift for Junior.

Molly's camera breaks while she and Grandpa Nat are observing an active volcano; Molly and Tooey plan a bird-watching trip to celebrate winter solstice and Trini's birthday.

Madam C.J. Walker shows Xavier that working hard on his lemonade stand can help him afford the pogo stick of his dreams; Edwin Binney shows Xavier, Yadina and Brad that to work together as a team, they should listen to everyone's ideas.

Paleontologist Kirk Johnson explores the polar extremes of the planet, including miles-high ice sheets and warm polar forests brimming with life.

Exploring Scandinavia's kingdoms of fire and ice and the animals -- including muskoxen, polar bears and arctic foxes -- who must navigate the landscape as it changes around them.

Programs from the 1904-1905 World Series; Dr. Seuss lunch box art circa 1970; Oscar Heyman jewelry circa 1955.

A regular panel of guests from across the political spectrum discuss the biggest international stories of the day, along with news-making interviews and analysis from BBC correspondents around the globe.

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 panel of journalists provides reporting and analysis of the major stories emanating from the United States capital.

Margaret Hoover leads interviews and debates.

The intersection of history, culture and contemporary craft in the eastern region of the U.S.; featuring M&S Schmalberg, Bisa Butler, Colette Fu, Roberto Lugo, Ubaldo Vitali, Paul Revere and Helena Hernmarck.

Celebrating the continuum of heritage and the handmade; featuring Graham Ebner, the Institute of American Indian Arts, Poakalani Quilters, Hokule'a, Marques Hanalei Marzan, Kawika Lum-Nelmida, the Bishop Museum, Cary Schwarz and Jeff Minor.