K21IR-D

Rick Steves tours the Italian heartland, including Umbria, Assisi, Siena, and the Cinque Terre.

An all-barre, waist toning workout strengthens the abs and slenderizes the core.

Exercises for fingers, gait and back strengthening.

Martin and Chris search for a creature with good hiding powers -- the stingray -- for a game of Creature Hide and Seek.

The Hunters head to a nearby mountain to learn about snow.

Lyla has to backtrack her hike at Moon Rock Cove to find her mom's missing phone; the Loops kids divide up kitchen cleaning chores between easy and hard, so everyone has an equal amount of work.

Elmo, Abby and Julia build a mini city while Grover helps Cookie Monster serve ice cream.

Cookie Monster uses his new Cookie Cart to bake for his friends; Grover tries magic to entertain his friends.

Captain Elmo's solo mission to Jupiter is interrupted when his friends join and mess up his plan; Grover tries to fix the spaceship boosters.

Director Grover has the perfect plan for his play; Tamir and Cookie Monster try to fix the suitcase.

Cookie Monster gets tired from pushing his cart, so Abby uses magic to make the cart move on its own; Grover tries to deliver boxes.

Duck Duck has a big feeling, but she doesn't know what it is; Clyde feels sad, so the pals give him time to feel better.

Rosie and Papa switch roles for the day, but it's trickier than they thought; Rosie tries to make a family tree for Valentine's Day.

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

Alma and Rafia want to make an animal photo book, but the animals won't cooperate; Alma and Rafia volunteer to help Safina after she hurts her arm.

Molly embarks on a mission to find Grandpa's drum and return his lost songs to him; Connie tries to teach Molly, Tooey and Trini how to paddle a canoe.

Xavier learns all about playing the recorder when he meets Johann Sebastian Bach; Marie Curie inspires Brad to follow his dreams.

The Glacier Express train in the Swiss Alps is an engineering marvel, traveling over treacherous gorges and through huge mountain ranges.

A close look at the life of George III, including the effect of his mental illness on Britain and how the assassination attempt on his life changed psychiatry.

The motives behind the Gunpowder Plot of 1605, and what might have happened if it succeeded.

A Marilyn Monroe-signed autograph; 1986-1987 Michael Jordan basketball cards and sticker; a Tiffany & Co. diamond and sapphire bracelet circa 1960.

A regular panel of guests from across the political spectrum discuss the biggest international stories of the day.

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.

Finds include a Michelin Bibendum ad figure, a World War I surgical kit and a 19th century southern basket.

A traveling puppet show circa 1870; Yakama toy cradle and doll circa 1890; a 1993 Air Jordan sneaker display.

A behind the scenes look at "The American Revolution" with Ken Burns, Sarah Botstein and David Schmidt to learn about the production, which took nearly a decade to complete.

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

A traveling puppet show circa 1870; Yakama toy cradle and doll circa 1890; a 1993 Air Jordan sneaker display.

A 1982 George Condo drawing; a folk-art spool table circa 1900; a Guido Gambone vase circa 1960.

Reconstructing the royal wedding of Queen Victoria and Prince Albert, including the stories behind the dress, food and music.

A reconstruction of Queen Victoria and Prince Albert's royal wedding, including the wedding breakfast.

Comics Tim Vine and Ricky Grover search for profitable antiques in southeast Scotland; David Harper and James Braxton guide them; the teams gamble on a mahogany chair and pewter candlesticks.

A standing and barre workout strengthens the knees and prevents knee pain.

Stretching and strengthening the abdominal and back muscles helps protect the spine from injury.

The Kratt Bros. discover there is an old wily orca who only eats large sharks; they find this hard to believe, so with the help of Aviva's dolphin decoder, modified to speak orca, the Wild Kratts go in search of the orca who likes sharks.

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

Lyla and Everett struggle to play Hot Cross Buns at the same tempo, and they learn how to read music; Lyla is upset when Luke's snack becomes popular.

Ronald, a meticulous, rule-following pig, and Roxy, a free-spirited musical hedgehog, explore the "wows" of one of America's most extraordinary places -- Sequoia National Park.

Daniel and his friends dance, sing and tell jokes that show their love and care for each other; Daniel hides hearts around the house to show his love for Grandpere.

Phoebe and Jay accidentally get paint on the mail and have to decode addresses; Phoebe and Jay find their parents' box of memories.

Elmo, Abby and Julia build a mini city while Grover helps Cookie Monster serve ice cream.

The Wombats build a Cause and Effect machine; Super's best friend Chanaa pays a visit.

The pals want to hear the Yodel Birds sing, but they must build them a rest nest first; Donkey and Duck Duck want to cool everyone off with lemonade.

Rosie accidentally gives away her doll Lele on Donating Day; Rosie and Galita volunteer for Seniors Day at the Nature Center.

While helping Ms. Beaver construct a community garden the kids learn about rocks; Elinor tries to make her special dumplings all by herself.

Alma wants to hang out with Eddie's friends, but doesn't like it when she starts to feel like a little kid; Junior becomes everyone's pretend little brother.

Grandpa Nat joins the kids on a night watch to determine what the mysterious light is in the sky; Molly and Tooey help Mr. Patak record a carving demonstration.

Grandmaster Flash explains to Xavier that if he wants to create new music, he must experiment; Xavier and Yadina find out there are many ways to help Brad feel better after he falls off his bike.

Finds include a Michelin Bibendum ad figure, a World War I surgical kit and a 19th century southern basket.

A traveling puppet show circa 1870; Yakama toy cradle and doll circa 1890; a 1993 Air Jordan sneaker display.

Tracing the 400-year evolution of Broadway in New York, from its beginnings as a Native American road to the electrically-lighted theater district known as the "Great White Way"; riding from Boston to New York on a dirt "highway.".

Art Deco travel posters; a Waltham railroad pocket watch; a Lewis and Clark map; a visit to the Ypsilanti Automotive Heritage Museum.

A regular panel of guests from across the political spectrum discuss the biggest international stories of the day.

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.

America Ferrera and Darren Criss uncover their immigrant roots.

Celebrating the 50th anniversary of Woodstock, the three-day concert at a farm in New York that marked the end of one of the most turbulent decades in American history.

Two films explore belonging, memory and aspiration, revealing how place shapes nostalgia, resilience and the pursuit of the American dream.

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

Celebrating the 50th anniversary of Woodstock, the three-day concert at a farm in New York that marked the end of one of the most turbulent decades in American history.

Finds include a Michelin Bibendum ad figure, a World War I surgical kit and a 19th century southern basket.

A traveling puppet show circa 1870; Yakama toy cradle and doll circa 1890; a 1993 Air Jordan sneaker display.

A 1982 George Condo drawing; a folk-art spool table circa 1900; a Guido Gambone vase circa 1960.

A workout improves the mobility of the spine.

Warmup exercises using a large ball; using a small ball for finger flexibility.

A miniaturized Chris gets stuck to a bee.

The Hunters search for a way to monitor the weather after they lose power during a thunderstorm.

Lyla, Luke and Everett look for buried car keys at the beach; Lyla and Everett write a Super Stu comic.

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.

Prince Tuesday visits the school in his crossing guard uniform and helps the children practice safety rules; Daniel and Katerina drift too far from Mom while playing at the beach.

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

Cookie Monster uses his new Cookie Cart to bake for his friends; Grover tries magic to entertain his friends.

Zeke is troubled when he goes to the Creation Station for a sleepover and the bedtime routine is nothing like his own; the Wombats navigate a network of tunnels beneath the Treeborhood.

Donkey and Panda camp out to see the Bright Bugs; Panda feels tired of his purple things, so Donkey helps him take a break.

Rosie turns into a Super Kid for her nighttime job; Rosie helps out with the play at the community theater.

Olive's sneeze startles the kids when they are playing in the forest, prompting Elinor to learn about what causes sneezes in the first place; Ari wants to wear his lucky shirt for the big soccer game, but it is much too small for him.

Alma has to learn how to make rules that are fair for everyone when she is elected mayor of Cardboard City; Alma and Junior learn that little acts of kindness make a big difference.

Molly and her family's berry-picking adventure is cut short by pesky mosquitoes; Molly wants to visit her cousin who is harvesting herring eggs.

Grace Hopper shows Xavier that he will never know if he can build his robot differently than everyone else unless he tries; Itzhak Perlman shows Xavier that he can learn music his own way.

America Ferrera and Darren Criss uncover their immigrant roots.

The young United States declares war on Britain in June 1812, a struggle that threatens Canada's existence and divides the U.S. so deeply that the nation almost breaks apart.

A 1962 and 1963 Mercury Atlanta number 8 and number 9 archive; a Rasht horse cover that was made circa 1875; a purple sapphire ring.

A regular panel of guests from across the political spectrum discuss the biggest international stories of the day.

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.

David Attenborough explores London's Natural History Museum and meets creatures from the past, brought to life by CGI, including a giant eagle and colossal snake.

Paleontologists discover that dinosaurs thrived in unlikely places such as the cold and dark Arctic Circle.

Human skeletal remains found in the basement of Ben Franklin's British residence may have been used for science.

Tracing the arc of extinction from prehistory to the present, from fossils entombed in tar to cells frozen in hope.

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

Paleontologists discover that dinosaurs thrived in unlikely places such as the cold and dark Arctic Circle.

Human skeletal remains found in the basement of Ben Franklin's British residence may have been used for science.

Celebrating the 50th anniversary of Woodstock, the three-day concert at a farm in New York that marked the end of one of the most turbulent decades in American history.

America Ferrera and Darren Criss uncover their immigrant roots.

A workout focusing on the back and core helps to relieve and prevent back pain.

Working the somatosensory system.

A wildcat disrupts a game of badminton.

Corky is selected to make a presentation at school during a science day celebration, but humidity jeopardizes her project.

Lyla has to backtrack her hike at Moon Rock Cove to find her mom's missing phone; the Loops kids divide up kitchen cleaning chores between easy and hard, so everyone has an equal amount of work.

Nico is tired of being mistaken for her twin sister; Carl is upset when Nico breaks the Lint Dinosaur Monday rules and makes a Lint Monster instead.

Daniel learns the importance of sharing his feelings; Daniel pays attention to how many feelings he experiences in a day.

Jay and Lupe use wayfinding signs to track down Phoebe; Pete and Craig face an epic hoops battle on the courts.

Captain Elmo's solo mission to Jupiter is interrupted when his friends join and mess up his plan; Grover tries to fix the spaceship boosters.

It's Backwards Day in the Treeborhood; Cece, Carly and Clyde have fun with patterns.

Donkey's guitar goes missing just before the talent show; Duck Duck finally finds her family's treasure nest, but she is unable to open it.

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 learns about different plants when she makes soup with her grandparents; Elinor and her friends don't understand why their cupcakes aren't selling.

Alma volunteers André to make necklaces for their friends; Alma, Eddie and Uncle Nestor perform music on the subway.

Molly and Tooey realize drawing is harder than it looks when they help Randall come up with a Northwest Coast design for Aunt Mema and Uncle Jack's anniversary; Molly, Tooey and Trini strike gold.

Hedy Lamarr shows Yadina that she can do more than one thing; Xavier, Yadina and Brad learn that creative thinking can lead to new ideas.

David Attenborough explores London's Natural History Museum and meets creatures from the past, brought to life by CGI, including a giant eagle and colossal snake.

David Attenborough explores how the threat of extinction for millions of species may lead to problems with food and water security, the ability to control the climate, and a greater risk of pandemic diseases.

Viewing the shapes that cover the earth's surface from space; the Australian Outback is covered in pale spots due to wombats and elephants.

A 1982 George Condo drawing; a folk-art spool table circa 1900; a Guido Gambone vase circa 1960.

A regular panel of guests from across the political spectrum discuss the biggest international stories of the day.

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.

Exploring the west side of Austin, Texas, where hill country begins; e-foiling on Lake Austin; Laguna Gloria; bouldering on Bull Creek; Hawaiian Tex-Mex and classic barbecue cuisine.

A road trip along the Panhandle portion of "America's Highway.".

Experiencing Texas through the perspective of a storyteller.

Writer-producer Tony Rettenmaier and director Juel Taylor talk about "They Cloned Tyrone" and how they incorporated socio-political commentary into the science fiction, comedy-mystery film.

ACL inducts Kentucky band My Morning Jacket into the ACL Hall of Fame; with special guest director and journalist Cameron Crowe.

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

Exploring the history and science of cotton.

Exploring how supermarkets have reshaped lives and the planet, from New York to rural Thailand.

Human skeletal remains found in the basement of Ben Franklin's British residence may have been used for science.

David Attenborough explores London's Natural History Museum and meets creatures from the past, brought to life by CGI, including a giant eagle and colossal snake.

Paleontologists discover that dinosaurs thrived in unlikely places such as the cold and dark Arctic Circle.

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

Using balls to release restrictions that build up in connective tissue throughout the body.

The team tries to figure out how a gecko lizard climbs up surfaces and upside down.

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

Lyla and Everett struggle to play Hot Cross Buns at the same tempo, and they learn how to read music; Lyla is upset when Luke's snack becomes popular.

Lotta is determined to show Skyler that she is more than just "headphone girl"; the new kid in school causes a hullabaloo on the playground.

Daniel teaches his friends his happy song; Daniel is excited to go to the castle for Prince Wednesday's birthday party.

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

Director Grover has the perfect plan for his play; Tamir and Cookie Monster try to fix the suitcase.

The Wombats try to save Harvest Day as it becomes overrun by fog; Zeke tries to create stew that meets Mr. E's high standards.

Donkey and Panda set big goals to achieve throughout the day; Donkey shows Mousy how to play the Donkey Way.

Rosie makes a dance party island in her backyard, but the flag she puts up causes confusion; Rosie decides to be the mascot for Javi's soccer team.

The kids learn the best way to slide down a hill; Ari and his friends learn the importance of oral health after Ari forgets to brush his teeth.

Alma opens a traveling repair service, but running back and forth for fix-it supplies proves exhausting; Alma has to figure out how to handle her feelings when Howard tells Junior he can't play water tag.

Trini's excited to enter her giant cabbage into the Alaska State Fair, but a moose keeps nibbling at its leaves; Molly has to impress Aunt Merna if she wants to get her native name.

Ravi Shankar shows Yadina that it can feel good to share her culture; Babe Didrikson Zaharias shows Yadina that practice can help her do difficult things, like making the basketball team.

Paleontologists discover that dinosaurs thrived in unlikely places such as the cold and dark Arctic Circle.

Human skeletal remains found in the basement of Ben Franklin's British residence may have been used for science.

An orphaned baby Triceratops must outwit a deadly Tyrannosaurus rex.

A traveling puppet show circa 1870; Yakama toy cradle and doll circa 1890; a 1993 Air Jordan sneaker display.

A regular panel of guests from across the political spectrum discuss the biggest international stories of the day.

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.

As the nation nears its 250th anniversary, moderator Jeffrey Goldberg leads a panel of prominent journalists in exploring America's future.

A journey through the life of singer-songwriter Janis Ian, and how she rose as a folk icon and gay rights advocate.

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