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Anthropologist Niobe Thompson travels the world to uncover how the relationship between humans and horses evolved.

Celtic Woman celebrates 20 years at The Helix in Dublin with special performances by founding members Chloë Agnew, Lisa Kelly, Méav Ní Mhaolchatha and Máiréad Nesbitt.

Singer-songwriter Barry Manilow performs fan favorites including "Somewhere in the Night," "Mandy," "Copacabana," "Daybreak" and "I Write the Songs.".

Friendship; Prince Tuesday, Ana and Lady Elaine learn that sharing can be hard.

Muffy is terrified when peregrine falcons build a nest outside her bedroom window; Binky must choose between starring in a television commercial or performing in a talent show.

The brothers learn about hunting mechanics from hammerhead sharks after Martin loses the Creature Power Discs.

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

Lyla and her siblings figure out a new morning routine so they won't miss the bus again; Lyla wants to learn a popular clap and dance sequence -- the Carrot Cake dance.

Sheldon can't wait for Carl to play his favorite beach game; Lotta and her friends search for Lotta's lost blanket.

Daniel takes care of the class pet; Daniel learns that taking care of Margaret makes him feel good.

Phoebe and Jay use a checklist to guide them through their tasks; Jay creates his first comic book and learns about the importance of page order.

Never-before-seen stories of women who broke codes and split atoms, gathered news, crossed front lines and rescued children during World War II.

Dr. Steven Gundry reveals how many troubling issues -- brain fog, memory loss, anxiety, weight gain and neurodegeneration -- can all stem from a compromised gut.

Discover history, natural resources and recreation at eight of Nebraska's state parks.

Exploring the role of Jewish composers and lyricists in the creation of the modern American musical; narrator Joel Grey.

Guitarist Joe Bonamassa plays a tribute concert in honor of Rory Gallagher in Rory's hometown of Cork, Ireland.

Nebraska Public Media Sports captures the commitment and dedication it took the Husker Volleyball program to build a championship team in 2015.

Celebrating the three amateur sleuths who use their unconventional methods to solve a series of murders.

Cora makes a discovery that could throw the inheritance issue into chaos. Under pressure from her aunt, Lady Rosamund Painswick, Mary keeps Matthew waiting for an answer to his proposal.

Artists and groups from the 1960s perform, including Davy Jones of The Monkees, Paul Revere & the Raiders, The Miracles and Peter Noone.

Billy Joel's record-breaking 100th consecutive performance at Madison Square Garden; special appearances by Sting and Jerry Seinfeld.

Celebrating Europe's art and creative geniuses, from Leonardo da Vinci to Vincent van Gogh; Florence's bold "rebirth" after Europe's medieval struggles; impressionist works of the late 1800s.

George has a lucky streak, so his friends ask him to wish for a snow day; Prunella makes the gymnastics team.

Members of the Mobile Unit get zapped into sandwiches by villain Shelly Catessan; the Mobile Unit faces a series of challenges that Orla knew would be coming.

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.

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

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

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

Flower arranging; life coach Nicolette Dobbe-Behrendsen talks about flowers as metaphors; spirit flower.

A day at Moss Mountain Farm, P. Allen Smith's working farm in Arkansas.

Follows the expedition of four climbers on their journey to the summit of Everest, just days after eight climbers lost their lives in a deadly storm.

Four Air Force veterans compete in an extreme race to cross the Atlantic Ocean to raise funds and awareness for veterans experiencing mental illness.

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

The creation and cultural impact of the "Wishbone" children's public television series that brought classic literature to life, featuring cast, creators and behind-the-scenes stories.

Martin Clunes adopts retired guide dog Laura from blind fitness guru Jaina Mistry; while she hunts for a replacement, Martin discovers how great guide dogs are created.

Kevin gets a firsthand look at Nick Offerman's woodworking shop; home technology expert Ross Trethewey looks at a new device to track home energy usage in Future House; Richard shows what happens when one uses the wrong soap in the dishwasher.

News. Reporting on the day's international news from London and from BBC correspondents around the world.

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

Follows the expedition of four climbers on their journey to the summit of Everest, just days after eight climbers lost their lives in a deadly storm.

Martin Clunes adopts retired guide dog Laura from blind fitness guru Jaina Mistry; while she hunts for a replacement, Martin discovers how great guide dogs are created.

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.

Arthur, D.W. and Buster build sand castles at the beach; Buster goes out of his way to avoid germs.

Opie hosts the Odd Squad Superfan tour but finds out a villain has joined in disguise; Orli and Ozzie must solve 37 cases in order to get access to an exclusive club.

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.

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

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.

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.

Who owns Antarctica; penguin highway; where to find whales and Weddell seals; why penguins are black and white; how long seals can stay underwater.

Hidden gems of Manchester; Rome's Orient Express La Minerva; the world's best street art.

Chopin's Ballade Number 1. Less than ten minutes long and extremely difficult to play it requires exceptional skill. In this emotional documentary, two people from opposite sides of the world talk of its effect on their lives.

The story of the Everglades is brought to life through music, imagery and the voices of those who live and work there; featuring New World Symphony.

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.

Tom is in Cincinnati to create a simulated wainscoting out of base cap molding; NASA astronaut Mike Foreman shows off a few space tools; Richard helps a homeowner get enough hot water for his children's bath time.

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

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