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Exploring the importance of the polar seas as polar oceans warm and sea ice disappears.

Dr. M. Sanjayan explores seven of Earth's bellwether biomes.

Innovative efforts to confront climate change in Australia, Brazil, California and Kenya; with Dr. M. Sanjayan.

Innovative efforts to confront climate change in Australia, Brazil, California and Kenya; with Dr. M. Sanjayan.

Mr. McFeely visits a trumpet factory; King Friday declares he owns a comet.

Muffy wants a Dream Bouncy Castle for her party; Francine and Muffy set up their older siblings.

A joey steals car keys from Martin and Chris.

The Hunters investigate a mysterious rain that happens with no clouds in the Indonesian rainforest.

Lyla and a new friend build a spaceship; Lyla learns her sisters can predict what the other wants, so she tries to do the same with Luke.

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 finds out he is going to be a big brother; Daniel wants to help prepare the baby's room but struggles with having to give up his old things for his new sibling.

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

Syria plans to revive its railways; extreme heat challenges Taiwan while monster bikes connect remote villages in Cameroon.

Attorney and estate planning expert Ethel Mitchell explains how wills, trusts and sound legal planning protect families and generational wealth.

News analysis of issues and policy affecting the U.S.

Songs include "New York, New York," "My Kind of Town," "Chattanooga Choo Choo," "Hawaiian Wedding Song," "Wichita Lineman," "Everything's Up to Date in Kansas City" and "God Bless America.".

Norwegians eat a packed lunch every day -- identical open-faced sandwiches called matpakke.

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

A company turns commercial food waste into healthy compost for gardening; immigrant refugee families from Asia start small farms to sell produce at local farmers markets; a team builds sustainable homes out of straw in Utah.

A springtime cactus surprise.

A mountain valley replete with tall fir trees and wildflowers.

Building a shop bench and stool.

The crew begins work on a 1969 Charger that turns out to be a surprise birthday present.

The Grand Bazaar in Istanbul; strolling along the Golden Horn; zipping by tram from the Old Town to Taksim Square; hopping a ferry to Asia.

A Taiwanese-American farmer is inspired by her childhood dishes; a look into the nutritional benefits of culturally significant foods like bitter melon; a farm is led by women; tour an apple farm.

The women begin taking risks to change their futures; Kristina sets goals to tackle debt and explore refinancing; Amber confronts time poverty and explores homeownership; Ashley works to improve credit and consolidate debt.

Experts analyze prominent international affairs topics and America's role in a shifting world.

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

The benefits and challenges of building offshore wind projects in U.S. waters.

An adaptive sailing program gives children a chance to enjoy a day on the water.

As Judith and Suzie work with the police to find the killer, tensions rise among Becks' friends in the house.

The murderer in Corfu claims another victim; Eliot's condition worsens and Susan unexpectedly finds herself a suspect in a murder case.

Cushla's relationship with Michael deepens, despite growing tensions at home and school; Gina's drinking worsens, and family pressure mounts; Cushla learns unsettling truths about Michael's past, but passion and tenderness draw them back together.

Keeping heritage alive through games that teach language, inspiring children through a superhero and sharing the written word.

As Judith and Suzie work with the police to find the killer, tensions rise among Becks' friends in the house.

The murderer in Corfu claims another victim; Eliot's condition worsens and Susan unexpectedly finds herself a suspect in a murder case.

Cushla's relationship with Michael deepens, despite growing tensions at home and school; Gina's drinking worsens, and family pressure mounts; Cushla learns unsettling truths about Michael's past, but passion and tenderness draw them back together.

Hundreds of diverse choral groups from all 50 states perform a new work in celebration of the 250th anniversary of the signing of the Declaration of Independence.

A look at the documentary series by Ken Burns that illustrates how the American Revolution came to life.

The family stories of political organizer Donna Brazile, actor Ty Burrell and artist Kara Walker.

Syria plans to revive its railways; extreme heat challenges Taiwan while monster bikes connect remote villages in Cameroon.

Secretary-General of the United Nations António Guterres reflects on the UN's role amid growing conflict, instability, and the rise of AI.

An in-depth portrait of Asia today, covering its dynamism as a center of growth.

Vulture nests in Spain; the long shadow of dictatorship in Albania; the threat of rock avalanches may lead entire villages to be abandoned in Switzerland; high-tech to fight forest fires in Greece.

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.

Dylan realizes he doesn't love square-dancing; Carl teaches Nico how to ride a bike.

After Miss Elaina loses her mitten, her mom teaches her how to put things away so she can find them later; Prince Wednesday loses his comic book.

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

Grover tries to cheer up Elmo, who is feeling sad after his dad leaves for a work trip.

Ellie's so excited to be going home to Jamaica that the Wombats and Mr. E start to worry whether she'll come back; Buckley comes over for a playdate with Zadie.

The pals find a box of Golden Crunchdoodles cereal; Donkey, Panda and Bob Dog want to play different things.

Uncle Steve takes the kids to the park for the Wonder Walrus show; Rosie and Javi make a space museum.

Elinor and friends build a log bridge over a stream; the kids set out to learn everything they can about blinking when Ari is crowned the blinking champion at school.

Restorative yoga is designed to help the body rest and restore with the support of props.

Twisting the spine to liberate the upper body and shoulders; finger exercises help relieve neck and shoulder pain; releasing tension in the hips and spine to stretch and strengthen glutes and hamstrings.

Defying gravity; learning secret code for fast and slow in music; comparing by weight; reading "Whooo Knew?: The Truth About Owls"; reviewing final blends nk and ng; inflections -ing, -s and -es.

The agents are called upon when a lost Baby Laser Chicken is found in the Austrian countryside; clocks stop working when the Odd Squad Timekeeper is struck with oddness.

The Kratt brothers take a day off from adventuring to go camping, where they meet a mischievous little moose calf.

Lily, Corky and Benny attempt to film their own weather broadcast, but need Great Grandpa Wallace's tools to create their weathercast.

A series of mishaps gives Alma "the grumps"; Junior wants to play basketball with the big kids and make a basket.

Molly and Tooey decide to make a few of their own Alaska Native superheroes; Molly wants to fix up her old sled for Trini, but she's not sure she is ready to part with it.

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.

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.

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.

Vintage finds include a Gibson style H-2 mandola circa 1918, a Tiffany Studios Daffodil lamp circa 1906 and an 1852 Lincoln manuscript.

Nineteenth-century Hawaiian poi pounders; a Dirk van Erp copper vase; an 1888 Joseph Nawahi oil painting.

Cuban singer Omara Portuondo's life, from the stages of Havana's nightclubs to her worldwide fame as part of the Buena Vista Social Club.

Stay informed with the latest breaking news and headlines.

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.