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Congress puts George Washington in command of a new Continental Army; Congress declares American independence in July 1776.

Author and historian Rick Atkinson discusses the American Revolution.

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

Actors Ted Danson, Mary Steenburgen and William H. Macy trace their nonconformist ancestors back to the Puritan establishment.

Congress puts George Washington in command of a new Continental Army; Congress declares American independence in July 1776.

Exploring the Erie Canal's contributions to America with a focus on Lockport and the Flight of Five Locks.

Neil Armstrong-signed Apollo 11 moon landing photos; a Tongan war club made around 1800; 1993 "Magic: The Gathering" beta cards.

Francine must overcome her fear of public speaking so she can voice her concern about pollution at the Earth Day rally; Ladonna dreams of skiing and sledding.

Delivery Debbie goes undercover to stop a group of villains; when Olympia finds out Dr. O is leaving, she struggles to throw a great goodbye party.

Molly and Vera think about teaching more tourists in Qyah about wildfire prevention; Molly can't wait to hunt for seagull eggs.

It's an exciting day for Lily and her family when they move into their new house.

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 and his family explore nature, watching a red bird build a nest; Daniel, O the Owl and Uncle X take a nature walk through the forest.

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

Elmo, Grover, and all their friends help Charlie build a Little Library for her Mitzvah Day project for her synagogue. Helping neighbors share books is Charlie's way of making the world a kinder place.

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.

Donkey and Grampy try to make an old family recipe; Donkey and Panda are excited to try a new cereal.

It's Recycling Day, so Rosie becomes a recycling kid, but she accidentally recycles Crystal's art project; when Rosie and Javi find a monarch butterfly in the backyard, they try to figure out what it needs so it can flutter again.

Elinor and her friends are inspired to build a nest; Elinor and her friends learn that it is good to eat different types of foods.

Alma tells all her friends that Howard is moving; Alma wonders if she should buy new materials for her recycled art project.

While doing their annual Laundry Day, the Kratt brothers disagree on what is better -- blue oceans or green forests.

Nature Cat and pals realize they've come to the end of their Nature Curiosity List; Sir Galahad gives himself the title of King, moves into a castle and steals pieces of nature to make it look more beautiful.

Martin and Chris observe wild cats and dogs interacting with each other on the African savanna.

Congress puts George Washington in command of a new Continental Army; Congress declares American independence in July 1776.

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

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

Scientists try to figure out how to predict weather events called "rain bombs" that sink ships and down planes.