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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.

A Cuban family adjusts to life in the United States.

Kings and prime ministers studied at Oxford and Cambridge universities; Blenheim Palace, the birthplace of Winston Churchill; Ironbridge Gorge.

Arthur's not sure what to make of the new baby; D.W. considers running away to Button Island.

Oscar attends a gathering of Odd Squad scientists called Lab-Con at Odd Squad Academy.

Martin and Chris find out that Zach Varmitech plans to capture a black jaguar.

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

Lyla and Luke clean Stu without a bath; Lyla and Ale find a way to protect the callaloo plants from stink bugs.

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

Daniel visits the post office and learns how letters are sorted and mailed, then sends a letter to Dad; Daniel and Dad Tiger surprise Mom with banana bread.

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

Reporters Elmo and Abby offer strategies to Nursery Rhyme characters experiencing big feelings of excitement, nervousness and frustration.

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

Donkey and Cousin Hodie figure out how to have fun in the rain; Donkey is patient while Cousin learns a new game at Grampy's Game Day.

Rosie finally gets the courage to go into the Fun House at the carnival, but then finds out she doesn't have enough tickets; Rosie goes to the pet store to get something for Crystal's new bunny.

The kids try to determine what the weather will be like for Animal Town's parade; Olive gets a bad case of the hiccups.

Alma finds a way for everyone to get books while the library is under renovation; Alma finds a doll in the park.

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.

David Suzuki explains to Xavier that by taking care of the earth, we take care of ourselves; Esther Martinez explains to Xavier and Yadina about how stories can connect people to their family histories.

An Italian hotel proprietor's autograph book; Margaret Keane "Big Eye" painting; collection of 1936-1939 Edward Weston photographs.

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.

The latest news from health journals and research institutions.

The most common causes of shoulder pain, types of injuries and treatment options.

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.

Chronic disease, knee replacement, mental crisis.

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 story of the American suffragist movement and the friendships, heartbreak and action that brought women together and tore them apart.

A heated debate to pass the 19th Amendment giving women the right to vote escalates in Nashville, Tenn., in 1920.

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

The charred corpse of an Iranian man is found in his house, leaving investigators to question whether it is a case of spontaneous combustion or a diabolical crime.

Sherlock and John plunge into a battle of wits with a shadowy stranger when faced with an unusual clue in an empty room.

Sherlock and John discover that a case of blackmail is more than just a threat to topple the monarchy.

Helsinki, Finland's Neoclassical old town has a modern flair for design; two-hour boat ride to Tallinn, Estonia.

Exploring Versailles; Vaux-le-Vicomte; Fontainebleau; the glass and statuary of Chartres cathedral.

Arugula and Carl go on an adventure as archaeologists; Carl spots a UFO on Mother's Day.

Things don't go as planned when Daniel and Dad Tiger spend the day together; Daniel and Mom's day together includes turning her old wagon into a trolley.

Rosie and Javi get a new book, but it's in a different language; Rosie tries to form a club with her friends.

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

All aboard the Moo Moo Choo Choo; visiting great uncle Duper in the Windborhood; world's biggest whirligig blows away; helping great uncle Duper imagine how to build a new one.

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

Ari grows impatient waiting for ketchup; Elinor, Olive and Ari have to figure out how to expand their clubhouse to fit all the new members of The Explorer's Club.

Hacker tries to derail the train carrying Madre Bonitas flowers in order to ruin Mother's Day.

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

How modern stress and isolation may be countered by rediscovering ancient values; exploring the lessons of Otzi the Iceman in understanding modern diseases; Switzerland's Jan Michalski Foundation.

Exploring Ted Turner's Ladder Reserve in New Mexico; wildlife experts discuss vital conservation work focused on endangered species protection.

Edinburgh Castle; the new Scottish Parliament Building; Her Majesty's Yacht Britannia.

Celebrating 10 years of "Weekends with Yankee" and 90 years of Yankee magazine; naturalist and author Sy Montgomery and artist Matt Patterson spend time with rescue turtles; the art of oyster shucking on Cape Cod.

Installing vinyl siding on the main house and ADU; revealing the ADU's framed layout; reviewing basement HVAC; installing a three-panel slider to connect indoor and outdoor living.

Lawn mowing basics; how to vet and hire a trustworthy contractor to avoid costly mistakes; installing a concrete paver walkway.

Easy-stretch yogurt pizza dough; arrabbiata slab pizza; tarte flambee; how to turn a kitchen into a pizzeria.

A flavorful tandoori salmon; favorite kitchen gadgets under $15; a tasting of yogurt; broiled smashed zucchini with garlicky yogurt.

Grilled hilltribe chicken with kua txob; the difference between fondue and fonduta; refreshing tomatoes with fontina sauce and cornichon dressing.

How contemporary dishes incorporate unique ingredients like mesquite flour and prickly pear syrup; efforts to preserve ancient Hopi corn varieties and other traditional foods.

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

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

Featuring Sweet & Sour Fish.

Host Ann Bocock interviews best-selling authors.

It's a full house at the gym as Matthew and Luke face off in the ring, but the match takes an unexpected twist; two boys are found near death and locked up together in the boxing ring.

Mrs. Slocombe is distraught when her cat Tiddles goes missing. Knowing her attachment to the animal, the rest of the staff buy her a kitten.

Hyacinth intervenes when Daddy slips out and runs up a hefty bill in a store's toy department.

Jean (Judi Dench) mistakenly believes Judith and Alistair (Moira Brooker, Philip Bretherton) are spending a weekend together.

Achievements of the Song dynasty, creators of a Chinese Renaissance, and the Ming, who built the Great Wall and the Forbidden City.

The 1st Marine Division defeats Japanese forces on the Pacific island of Guadalcanal in 1942.

Blues rock musician Gary Clark Jr. performs highlights from "JPEG Raw"; Black Pumas present selections from "Chronicles of a Diamond.".

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

The festivity of Barcelona; Montserrat; pilgrimage along the Costa Brava; Salvador Dali's home and mausoleum/museum.

Bloomberg reporter Katrina Manson, author of "Project Maven: A Marine Colonel, His Team, and the Dawn of AI Warfare," joins Ian Bremmer to discuss the promises and pitfalls of AI on the battlefield.

Entrepreneur and financial strategist Will Roundtree breaks down practical strategies for credit, capital and wealth-building.

Community activists in western North Carolina discuss the lessons learned from Hurricane Helene.

The new Nissan Sentra; the Lucid Air Touring, an all-electric sedan blending luxury and performance; a battery-powered camping trip; "Your Drive" car care.

Florida Keys National Marine Sanctuary holds the USS Gen. Hoyt S. Vandenberg, intentionally scuttled off Key West.

Marine botanist Sylvia Earle and Fred Rogers snorkel off the Florida Keys.

Hacker tries to derail the train carrying Madre Bonitas flowers in order to ruin Mother's Day.

Daniel visits the post office and learns how letters are sorted and mailed, then sends a letter to Dad; Daniel and Dad Tiger surprise Mom with banana bread.

Rosie finally gets the courage to go into the Fun House at the carnival, but then finds out she doesn't have enough tickets; Rosie goes to the pet store to get something for Crystal's new bunny.

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

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

Donkey and Cousin Hodie figure out how to have fun in the rain; Donkey is patient while Cousin learns a new game at Grampy's Game Day.

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

Rae must remember the buttons to push to get the Beeples to Marshmallow Mountain Station when she takes a job as a train engineer; Dev needs to stay organized.

Miss Penny and Shiny the Star embark on exciting adventures.

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

A look at Pensacola's deep ties to the military.

A resident helps to change her HOA standards; the entire community shows up to help install a Florida-friendly landscape at the front entrance to the neighborhood.

In the first two years of World War II, Hitler's fighting machine crushes Germany's enemies in a series of offenses called the blitzkrieg or lightning war.

Fast underwater speeds and super firepower make the Type XXI U-boat Hitler's ultimate deep sea destroyer.

The family of Raymond Haerry Sr. travels from New Jersey to Oahu, Hawaii, to place his ashes at the USS Arizona Memorial at Pearl Harbor.

Legends of 1960s and 1970s soul music perform their biggest hits; acts include The Temptations, James Brown, Patti LaBelle, The Chi-Lites, The Spinners, Sam Moore and more.

Father Brown investigates when his old friend Sister Boniface is implicated in the murder of a renowned artist.

Astrid confronts the criminal her father chased before he was murdered.

Sister Veronica weighs her future with the Order; Dr. Turner makes a final stand against the council's news before the maternity home closes; the Mullucks campaign for the rights of all thalidomide victims.

Alastair Bruce explores the social protocol of aristocrats in 1900s Britain; interviews with cast members, including Hugh Bonneville and Michelle Dockery.

Edmond reveals to Villefort that Heloise stole the vial of poison from him, the same poison used to murder the Marquise; Villefort confronts Heloise, threatening to expose her.

When an old acquaintance arrives in Kitzbühel, Nina's past comes back to haunt her.

Achievements of the Song dynasty, creators of a Chinese Renaissance, and the Ming, who built the Great Wall and the Forbidden City.

The 1st Marine Division defeats Japanese forces on the Pacific island of Guadalcanal in 1942.

How William the Conqueror's brutal invasion of England changed the country forever.

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

A Cuban family adjusts to life in the United States.

A visit to Lisbon, Portugal, features cod, hot pastries, a stroll of the city's back lanes and fado music; exploring castles of Portuguese royalty in Sintra.

Prunella receives a Braille copy of a book; Arthur and D.W. watch immature television shows.

Odd Squad must figure out how to control the temperature of two dragon eggs after the power goes out in headquarters.

Martin and Chris try to touch a hummingbird; the brothers utilize hummingbird powers to prevent Gourmand from cooking chocolate-covered hummingbird egg snacks.

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

Lyla and Stu help out when the neighborhood garbage truck malfunctions; Lyla and Louisa take a ride on the city bus and accidentally lose Stu.

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

Daniel and O play post office; Jodi uses things in nature to make a homemade boat.

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

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.

The Treeborhood celebrates a parranda; the Wombats try to stay awake on New Year's Eve.

Panda is sad when an exciting holiday is over; Rockstar Penguin asks Donkey and Panda to make up a new dance.

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.

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.

Alma and Eddie open a mofongo food truck but run out of time to make the mofongo; Alma challenges André to scooter races to prove she is faster.

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.

Edmund Hillary explains to Xavier that even the most courageous adventurers ask for help when they need it; Yadina prepares for a special birthday performance with the help of Celia Cruz.

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

Tom and Kevin use scrap wood to create an end grain cutting board in Build It; Scott installs surface-mounted downlights in a living room; What Is It?; Roger discusses the best ways to keep mice out of the house.

The latest news from health journals and research institutions.

Highlights the biggest seasonal hazards and how to avoid them.

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.

Featuring Batido de Mamey.

A Cartier Art Deco Tutti Frutti clutch circa 1925; a Carl Kauba cowboy bronze circa 1900; a Sumerian cuneiform tablet.

Green Bay Packers salesman's sample championship rings; Barbie dolls and wardrobe circa 1960; a 1977 Keith Haring Bean Salad lithograph.

The town of Natchez, Miss., confronts the tension between preservation and truth as it wrestles with race, memory and identity.

Three young adults meet industry professionals who expand our ideas of what well-being can be, from developing tools for digital wellness to laying the foundation for empathetic architectural design.

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