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Often overlooked, North America's tallgrass prairies are among the most dynamic and biodiverse ecosystems on Earth.

U.S. pressure has pushed Cuba's economy into free fall, with fuel shortages and mass emigration. Is a military operation imminent? Historian Michael Bustamante on the latest in the U.S.-Cuba crisis.

This daily news program, produced by Japanese public broadcaster NHK, focuses on headlines and current events in Japan and other Asian countries. English-speaking presenters also cover other areas of interest, including business news, science and technology trends, sports highlights, and global weather forecasts.

British General Howe defeats General Washington, forcing the Americans to abandon New York; Washington's army regroups in New Jersey before attacking an outpost at Trenton.

Lucy Worsley investigates the 18th century breakup of Britain and America, including the turning points that led to America's Declaration of Independence from Britain in 1776.

Exploring America's ancient cities; a lost city on the Mississippi River; native elders reveal ancient powers of the sky.

Western Pleasure Guest Ranch; historic Wallace, Idaho; riding mountain rails to trails of the old Milwaukee Road Railroad.

John Twiggs hosts the episode from CrowFair, a three-day celebration of indigenous culture, in Crow Agency.

An all-standing, neuromuscular workout with gentle and controlled movements to stretch knees and calves and increase the hip's range of motion.

Carl surprises Sheldon with a lemonade stand, but is confused when Sheldon runs off; Carl's caterpillars turn into butterflies.

When Bex removes her cochlear implant and hearing aid so she can go on the waterslide, Sammy and the Wombats find new ways to communicate; the Wombats love Leiko's new mural.

Elinor and her dad learn how to make their own chocolate; after accidentally breaking a jade plant, the kids learn how the plant grows.

A giraffe takes Creature Power Suit parts and supplies from the Tortuga.

Molly wants to keep a frog as a pet -- until she realizes it requires high-maintenance; Molly and Tooey can't wait to see the petroglyphs at the beach.

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

Daniel Tiger's treat from Prince Tuesday's fruity ice treat cart starts to melt when he becomes distracted by all the other flavors.

Donkey Hodie and pals help Purple Panda celebrate his first Halloween in Someplace Else.

Exercising finger joints.

The completion of a coastal Florida seascape scene.

Totem Bight State Historical Park in Ketchikan, Alaska; methods and materials used to make totem poles; a painting of a misty shoreline by a park.

Researching the identity of America's first peoples leads to Amazonian cave paintings, Mexican burial chambers, New Mexico's Chaco Canyon and waves off California's coast.

Tiger expert Valmik Thapar uncovers 50 years of archival footage chronicling the tiger clan of northwestern India's Ranthambore National Park.

Gwen Ifill shows Yadina that asking questions is a great way to get information; Matthew Henson shows Xavier and Brad that they can learn from each other.

Rosie tries to be a reporter but has trouble finding things that are newsworthy; Rosie and Jun believe there is a jalapeno giant on the loose.

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

Liana accidentally submits art that Stu made and feels guilty taking the credit for his work; Lyla and Luke perform an "Anansi" folktale puppet show.

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

The agents must help some villains stop a robot that is threatening to flatten the city.

The Hunters find a stowaway in their picnic basket, a little furry dog.

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

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

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

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.

From New York to Kolkata, dicovering the surprising and beneficial ways urban wildlife transforms cities into thriving, shared ecosystems.

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.

The Infiniti QX60; the Honda Pilot; a pop-up headlight sports car comparison test from the mid-80s.

Former CIA operations officer Sean M. Wiswesser.

This daily news program, produced by Japanese public broadcaster NHK, focuses on headlines and current events in Japan and other Asian countries. English-speaking presenters also cover other areas of interest, including business news, science and technology trends, sports highlights, and global weather forecasts.

General Howe takes Philadelphia, but the Americans' surprising victory over General Burgoyne at Saratoga encourages France to support the U.S.

Exploring how the American Revolution affected Britain, with sabotage, espionage and political unrest reshaping the empire.

Examples of resistance, survival and revival are revealed through horse-mounted Comanche warriors, secret messages in an Aztec manuscript and a grass bridge in the Andes.

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

Hatha yoga, the balance between an active body and a quiet mind.

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.

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

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 Kratt brothers use a new archery skill to rescue baby animals from Donita Donata's yacht.

While fishing, Molly and her cousin, Randall, encounter a sea lion with a strange word written on its back; Molly's scout troop halts its hike when Trini scrapes her knee.

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.

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.

Donkey and Panda have different ideas about how to celebrate Best Friends Day; while getting ready to make big art, the pals get stuck to a big glue bottle.

Building endurance and power in the quads, one of the largest muscles in the body.

Exploring the flowers of Hawaii at Green Point Nurseries and a flower farm; the flower breeding program at the University of Hawaii; anthurium; arranging; a flower cocktail hour with author Jenny Fiedler.

Quilting big and fast with the passion flower design; dealing with big seams; creating large templates.

The rise of great American nations, from monarchies to democracies; lost cities in Mexico; a temple in Peru; a potlatch ceremony in the Pacific Northwest; shell beads in upstate New York.

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.

Xavier and Yadina overcome a sibling spat with the help of Confucius; Sacagawea helps Xavier and Brad realize that just because Yadina is younger, she can do more than they think.

Rosie and Javi learn how people did things before there was electricity after a storm causes a power outage; Rosie learns to use tools from nature during a family camping trip.

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

Lyla has to help multiple people but rushes each task, which makes things worse; Lyla must use her left hand after hurting her right wrist.

Arthur enlists the help of an expert mouse catcher; Binky, Muffy and Ladonna find a kite in the park.

During the town of Trifle's 100-year anniversary party, Ozzie and Onom must stop Tracey Trifler from covering it in trifle; Osric and Omni try to stop a Roman gladiator from causing ancient oddness.

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

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

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

The team retrieves a patient with Down syndrome; Mira questions her place in Wayne's life; one of the team will be forced to leave the RFDS.

It's Christmas and the troubled Villiers family gather together nine years after the death of eldest son, Ferdy.

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