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Holmes plunges into a world of codes and symbols when he investigates a series of murders linked to a mysterious cipher.

Touring four castles -- Chenonceau, Chambord, Cheverny and Villandry; feeding hunting dogs; local cuisine; a princely garden.

Carl takes his friends on an "Amazing Smell Tour of Fuzzytown," but Lotta doesn't agree with Carl's list of the best smells; Carl and his friends go on a camping trip.

Daniel takes a spoon away from Margaret, which makes her cry; Teacher Harriet explains that you should ask first before taking something away from someone.

Five-year-old Mexican American Rosie Fuentes learns how the world around her works in her suburban Texas community.

Elmo tries to win a race without eating his sandwich, but learns that eating healthy food will give him energy; Cookie Monster tries to eat the sandwich for himself.

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

Phoebe learns what privacy signs are and how to use them to communicate to neighbors; Jay gets nervous about getting a haircut.

While delivering chocolates, the kids learn that warmer temperatures can melt treats; the kids help Mr. Raccoon calm down when he is having a bad day.

The Squad uses math and engineering skills to fix scooters after they mysteriously break; Jackie tests her new fixing skills on a broken family heirloom.

An Andrew Clemens sand bottle circa 1885; a 1933 Goudey baseball card set 239/240; a Joan Miró pencil on paper circa 1965.

The Kindland Movement of Cleveland brings communities together to highlight the importance of kindness.

Conservation efforts to protect plant and animal life at Great Smoky Mountains National Park; photography captures misty mornings in Cades Cove and vibrant scenic trails.

Mount Snowdon; medieval castles; Victorian promenades; slate mine; sheep-herding dog.

Filmmaker and environmentalist Tomas Koeck discusses New Hampshire's iconic loons; a late-summer garden party at Groundswell with founder David Fierabend.

Kevin demos a wall in the primary bedroom; framing an exterior wall to tie old and new spaces together; reviewing shared plumbing for the ADU; burying a new 400-amp service to feed both homes.

Turning a flower vase on the lathe; how to start seeds indoors for spring; breaking down common mortar cracks in fireplace hearths and surrounds; upgrading a garage door opener by adding a Wi-Fi hub.

Sweet and sour pork; Cantonese stir-fried black pepper beef and potatoes; hot oil-flashed garlic-ginger shrimp.

Grilling up a New England clambake; tips to up your grill game; grilled fresh cornbread with charred jalapenos and cheddar.

Grilled brined pork chops with garlic-herb oil; reviewing ceramic skillets; seasonal rhubarb shortcakes with buttermilk whipped cream.

Spring brings unique forageable foods like ramps, morels and fiddleheads; maintaining forest health and preserving its ecology makes foraging possible.

An Andrew Clemens sand bottle circa 1885; a 1933 Goudey baseball card set 239/240; a Joan Miró pencil on paper circa 1965.

Science, health, technology and environment experts and professionals address issues such as artificial intelligence, medicine and climate science.

Featuring Bulgogi.

Host Ann Bocock interviews best-selling authors.

When a young man is found dead and naked out on the Fens, Will and Geordie discover ties to a Cambridge research project experimenting with mind-altering drugs in psychotherapy sessions, but soon wonder if there is still more going on.

Rumors that the Japanese are buying the store cause the staff to protest at No. 10 Downing St.

Hyacinth tries to impress Emmet with her prowess as a singer.

Lionel is nervous about the photo shoot for the cover of his new book.

Exploring China's history, beginning at a festival devoted to ancient gods; China's first emperor; traveling the Silk Road; Tang dynasty.

The story of an American who joined the British Special Operations Executive (SOE) and was parachuted into France just after D-Day to organize the French Resistance into a cohesive army, hoping to stop German troops from reaching Normandy.

Rockers Pat Benatar and Neil Giraldo present a career-spanning hour of classic rock hits including "Heartbreaker," "We Belong" and "Love Is a Battlefield.".

An Andrew Clemens sand bottle circa 1885; a 1933 Goudey baseball card set 239/240; a Joan Miró pencil on paper circa 1965.

A canoe ride through the Dordogne River Valley; goose farm; lamp-lit castle; country market; Albi, home of Toulouse Lautrec; Carcassonne.

Rahm Emanuel calls the U.S.-Israel-Iran conflict President Donald Trump's war of choice -- and one that is becoming harder to contain.

Attorney and financial expert Markwei Boye shares essential tax and money management strategies for both small businesses and individuals.

Employees at Lucas Aerospace create the Lucas Plan, which focuses on goods that help society rather than defense.

The Subaru Crosstrek Hybrid; the Mazda CX-50 Turbo Carbon Edition; "Your Drive" car care.

The global decline of seagrasses and mangroves threatens an ecosystem collapse.

Fred and Mr. McFeely visit a recycling center.

After being warped into Cyberspace from a library computer, Matt leads friends Jackie and Inez as Cybersquad. With live hosts Bianca and Harry, the team must protect Motherboard from the evil Hacker who wants to rule Cyberspace. Using gadgets and following clues, the team solves math mysteries and any other problem that comes their way.

Daniel uses a different bathroom at the train station and Juan uses the bathroom at the Music Shop; O uses the bathroom at Jodi's house.

Rosie and her friends pretend to be pirates, but they need a globe to plan a route around the world; June and Rosie plan a virtual breakfast.

Rudy is afraid of getting a shot at the doctor's office, so Nina and Abby play pretend to show what the visit will be like so he can feel less scared.

Kaya's cooking class; the Wombats go on a treasure hunt.

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.

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

Chef Cora thinks about ingredients needed to make food for the hungry Beeples; Dev takes a job as an air traffic controller.

Miss Penny and Shiny the Star embark on exciting adventures.

Exploring the unique evolutionary journey of woodpeckers and the role they play in every ecosystem, except Antarctica and Australia.

The tourist destination of Winter Garden.

The Keenes turn their front yard into an environmentally-friendly garden; installing a new DIY pathway through a landscape.

Unraveling the mysterious life of George Masa, a Japanese immigrant whose photographs helped define the identity of the Great Smoky Mountains.

The stories of women who helped win World War II, including those who risked their lives flying planes, served as American spies and in the all-African American Central Postal battalion.

Father Brown investigates when rivalries escalate to murderous heights at the Kembleston Olimpicks.

The body of a biologist is discovered in a tropical greenhouse.

A new cohort of junior doctors join the midwives, including Timothy, who observes the contrast between clinical medicine and compassionate care at Nonnatus House; Violet announces her plan to shadow the midwives.

Alastair Bruce examines how aristocrats behaved in the 1900s Britain, including how they dined, dressed and interacted with servants.

Edmond locates Gaston, Villefort's illegitimate child, who has grown up to be a thief; Danglars discovers Fernand's treacherous deeds in Algeria and reveals all to the press.

A terrifying serial killer has the team racing the clock after the Countess is kidnapped.

Exploring China's history, beginning at a festival devoted to ancient gods; China's first emperor; traveling the Silk Road; Tang dynasty.

The story of an American who joined the British Special Operations Executive (SOE) and was parachuted into France just after D-Day to organize the French Resistance into a cohesive army, hoping to stop German troops from reaching Normandy.

Lucy Worsley investigates how the trial of one "witch" sparked Britain's witch-hunt craze; the investigation begins in North Berwick, a seaside town not far from Edinburgh, where the witch hunting craze began.

Exploring how the coverage of the unsolved 19th century case of Jack the Ripper created a template for the modern-day true crime obsession.

A Cuban family adjusts to life in the United States.

The Palio wild horse race in Siena, Italy; Tuscany's wine country.

Arthur gets chicken pox just as the circus comes to town; Arthur blames D.W. for making his dog sick.

Oscar recalls his early days at Odd Squad; Olive and Otto are trapped inside a board game.

Martin wants to check out insects, while Chris would rather investigate the spider monkey.

The kids learn what colors make up a rainbow just in time for a Mother's Day surprise.

Lyla and her sisters find a lost bag's owner; Lyla gets jealous when Ale gets attention.

Carl and his friends clean up the Fuzzytown Park; Carl accidentally breaks the birthday present Sheldon planned to give his mom.

Miss Elaina shows off her cartwheel at the carnival, prompting Daniel to try it, too.

Phoebe plans a birthday surprise for Grandma; Phoebe and Jay must tend to the bell pepper in the garden.

Rudy feels angry when Abby asks him to share his toys, so his friends make a movie to show that sharing can be fun.

Sammy and Benito find a way to communicate; Sammy makes plans for his mom's visit.

Donkey makes Grampy a special card but she gets into a few sticky situations when she tries to deliver it to him; the pals help Harriett with her new invention for penguins.

Rosie, Jun and Grandpa Liu go to the Asian Market to buy more sweet potato buns; Rosie and Javi help Tia overcome her stage fright when she goes on a television cooking show.

The kids learn about crying as they set out on an adventure to help Miri; the kids and Mr. Bat look for Ari's ball after it goes missing in a cave.

Alma and her friends must vote for either a new board game or art supplies; Alma and Harper open a lemonade stand.

A family of beavers builds a dam that accidentally diverts water into Trini's garden, threatening her strawberries; Trini is determined to earn the Night Watchers Badge.

Rukmini Devi reminds Xavier and Yadina why their annual family walk is special; Bob Ross shows Yadina that a small blunder can be a happy accident.

Exploring the unique evolutionary journey of woodpeckers and the role they play in every ecosystem, except Antarctica and Australia.

Nathan installs bypass doors for a pantry; Richard tests different smart automatic water shutoff valves; Ross explores asphalt roof shingles that can reflect some of the sun's heat.

The latest news from health journals and research institutions.

The most common childhood skin issues including allergic reactions, hand-foot-and-mouth disease, athlete's foot, and sunburn.

A detailed look into news stories from around the world from the BBC news desk in Washington, D.C.

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

Coverage from Washington, D.C. and London, with a regular panel of guests from across the political spectrum discussing the biggest stories of the day.

Chef Michelle Bernstein hears diner's reviews of restaurants.

A 1960 Ansel Adams Portfolio III: Yosemite Valley; a Persian Qashqai Gabbeh rug circa 1935; 1959 JFK's boxer shorts with signed photo.

The French-American alliance changes the war and moves it to other theaters; navies battle off England and in the Caribbean, while armies advance in Indian Country and the South; the British take Charleston.

The myths and realities of the American cowboy.

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

A new cohort of junior doctors join the midwives, including Timothy, who observes the contrast between clinical medicine and compassionate care at Nonnatus House; Violet announces her plan to shadow the midwives.

Alastair Bruce examines how aristocrats behaved in the 1900s Britain, including how they dined, dressed and interacted with servants.

Edmond locates Gaston, Villefort's illegitimate child, who has grown up to be a thief; Danglars discovers Fernand's treacherous deeds in Algeria and reveals all to the press.

A terrifying serial killer has the team racing the clock after the Countess is kidnapped.

A Cuban family adjusts to life in the United States.

Cotswold villages boast churches, manor homes and gastropubs; New Age capital of Glastonbury; prehistoric stone circles of Stonehenge and Avebury.

Arthur spices up an autobiographical story with fantastic tales; Arthur's dog, Pal, gets lost at a street fair.

Omni and Osric are desperate to get off the night shift and go to a party, but they must first stop a mysterious villain; Orwell and Okra must prevent a flying machine from stinking up Odd Squad's favorite places.

The Wild Kratts set off to find and re-create spider silk.

As a hurricane approaches, the Hunter kids learn about preparation and safety, moving furniture inside and checking their emergency supplies.

Lyla and Luke create and act out variations on a fairy tale; Lyla, Louis and Stu track down a lost package.

Nico and Arugula start a hamster sitter business; Carl is afraid to tell his Mama that his new shoes hurt his feet.

Daniel greets his friends at school; Miss Elaina and Katerina play space restaurant.

Phoebe, Jay and Lupe practice their fire safety plan when the fire inspector visits; Phoebe and Jay buy juice from Mr. Aguilar.

When Oscar tries to find someone disappointed by his disappoint-o-meter, he accidentally makes them happy.

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

Captain Donkey and her crew search for the Ruby Red Tater Treasure; Panda finds his favorite hoodie, but it no longer fits.

Rosie helps Iggy get ready for his checkup; Rosie wants to play in the new park -- but it is a park for dogs.

Elinor finds what she thinks is a fish in the pond, but she and her friends realize it's a tadpole turning into a frog; Elinor, Ari and Olive make up a dance.

Alma helps Andre prepare for a checkers tournament; Alma and Rafia compete for World's Greatest Artist.

Molly must find her mom's plane keys so she can get home in time for Mother's Day; Trini spots a talking white bird.

Cesar Chavez helps Xavier, Yadina and Brad find the inspiration to tackle a big mess in the playroom; Dolores Huerta teaches Xavier, Yadina and Brad that it is important to speak up when they see someone in need.

Archaeological investigations into the origins of democracy in Greece 2,500 years ago; mass graves and ancient ruins where tyrants were murdered shine light on the birth of a revolutionary form of government.

Kevin learns how quartz countertops are manufactured and installed; Nathan explains how to hang and display a U.S. flag; Tom and Jenn split firewood; Mark installs a firepit that comes in a kit.

Empowering individuals with intellectual disabilities with strength, confidence and a sense of self-worth.

Many conditions can cause symptoms like gas, pain, constipation, fatigue and bloating. Knowing what's simply annoying, and what could be a red flag.

Virtual town halls with medical experts cover various health issues.

A detailed look into news stories from around the world from the BBC news desk in Washington, D.C.

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

Coverage from Washington, D.C. and London, with a regular panel of guests from across the political spectrum discussing the biggest stories of the day.

Exploring artists with generation-spanning careers. Featuring Pioneer Winter Collective's "Apollo", dancer Elbert Watson, artist Gustavo Matamoros, and eco-artist Marcia Armstrong.

Actor Michael Douglas and writer/director Lena Dunham explore their family roots.

British General Cornwallis struggles to pacify the southern states; supported by the French, a victory at Yorktown secures independence for the Americans.

Original American monuments and the stories behind American favorites, from the Vietnam Veterans Memorial to Confederate soldier monuments.

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

A 1960 Ansel Adams Portfolio III: Yosemite Valley; a Persian Qashqai Gabbeh rug circa 1935; 1959 JFK's boxer shorts with signed photo.

The French-American alliance changes the war and moves it to other theaters; navies battle off England and in the Caribbean, while armies advance in Indian Country and the South; the British take Charleston.

The myths and realities of the American cowboy.

A Cuban family adjusts to life in the United States.

Traveling from Canterbury to Dover; hiking the trails atop the cliffs of the South Downs; seaside resort of Brighton; the naval heritage of Portsmouth includes a collection of historic sailing ships.

Arthur gets a new piano teacher; Buster volunteers to sell candy for the band.

All the agents want a piece when a new room opens up in headquarters; when the tubes are down for maintenance, getting a villain back to headquarters proves difficult.

The brothers come across a marsupial opossum while searching for Chris' lost goggles in the swamp.

Benny's toy penguin is swept away by melting snow, transforming a day of sledding into an urgent rescue mission.

Lyla trains Stu to help at the diner; Stu learns how to ride a scooter.

Forrest makes too many plans on the same day; Carl and Arugula build an epic marble run but fail to get the marble to run.

Daniel and Dad Tiger go to the Dad and Me Camp-out, where they run into Katerina, who arrives with her mom; Daniel and Mom head to the Mom and Me Game Night.

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

When Telly learns that earthworms are invited to Abby's garden party, his friends help him feel less scared.

Sammy plans a surprise Carnaval for his dad while Quique plans a surprise treat for his son; Malik performs a magic trick.

Bob Dog brings a ball to the Stuffie Playdate; Frannie Fox invites Donkey to her swamp, but she feels nervous about playing in it.

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

While delivering chocolates, the kids learn that warmer temperatures can melt treats; the kids help Mr. Raccoon calm down when he is having a bad day.

On Alma's great-grandmother's 100th birthday, Alma wants to find Bisabuela the perfect gift; even though she can think of all kinds of things that Bisabuela likes, none of them are quite right.

Trini is discouraged because she can't add her own moves to the Lynx Dance; Molly hopes to catch a Yukon River king salmon.

Yadina learns that if she wants to reach the top of the hill, she must keep going; everyone has ideas that are worth sharing.

A 1960 Ansel Adams Portfolio III: Yosemite Valley; a Persian Qashqai Gabbeh rug circa 1935; 1959 JFK's boxer shorts with signed photo.

Drywall paneling; cleaning a shower cartridge; using a lathe; turning a bowl.

The latest news from health journals and research institutions.

The risks of mixing prescription drugs, over-the-counter medications, and supplements.

A detailed look into news stories from around the world from the BBC news desk in Washington, D.C.

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

Coverage from Washington, D.C. and London, with a regular panel of guests from across the political spectrum discussing the biggest stories of the day.

Experts study the song that male humpback whales sing in their Hawaiian breeding grounds each winter to learn more about the animals' overall fitness.

The story behind David Attenborough's wildlife documentary series "Life on Earth," which changed his life forever.

How discoveries over the past 50 years have revolutionized people's understanding of the universe.

From Kenya to Mexico, people and wildlife find a harmonious balance in Earth's most vulnerable landscapes.

How to keep your energy level up during sex. Natural ways to improve your sex life after menopause. How to find love without using a dating app.

Identifying an Early Frame pea from Little Mountain, S.C., and returning it to Monticello.

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