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New evidence sheds light on Turkey's Gobekli Tepe, the world's oldest temple, and how archaeologists think about the roots of civilization.

Explorers, archaeologists and scientists combine technology and ancient texts to prove that Hannibal's army crossed the Alps to launch an attack on Rome.

From its rich coral reef and lush jungles to its mountainous heart, Borneo holds more diversity of life than any other island.

The life of Harriet Tubman, a conductor of the Underground Railroad who helped guide enslaved people to freedom; narrator Alfre Woodard.

The roots of director Spike Lee and actress Kristin Chenoweth.

Stay informed with the latest breaking news and headlines.

Stay informed with the latest breaking news and headlines.

CEO Samantha Tweedy, Black Economic Alliance, discusses wealth building strategies.

Stay informed with the latest breaking news and headlines.

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

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 learns that it's important to try to go potty before leaving the house; Daniel learns that sometimes when your tummy hurts, it could mean that you have to go potty.

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

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

The Wombats are excited for "Show and Tell" but Super might be too busy to attend; Louisa decides the Treeborhood needs a way to announce fun events.

Bob Dog imagines how others feel; Bob Dog makes a difficult choice for the Best Ball Fest.

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

While helping Ms. Beaver construct a community garden the kids learn about rocks; Elinor tries to make her special dumplings all by herself.

Creating captivating narrative quilts; broderie perse, an applique technique that can be used with commercially available fabric or custom appliques.

A workout shapes every muscle in the body, adding more definition and tone.

Making professional alterations on a pair of men's pants; shortening a sleeve.

Anti-gravity balls; poised pennies; centripetal spinner.

Vicita asks D.W. and Arthur to re-create the story from her lost book; Prunella takes on more extracurricular activities.

Oz arrives from The Movie Star dimension to help Orli find out who is turning the townspeople purple; three young villains cause trouble in town.

The gang thinks about whether there is life on other planets.

The roots of director Spike Lee and actress Kristin Chenoweth.

Live coverage of President Donald Trump's State of the Union address and the Democratic response.

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

Gardiner is a prolific singer songwriter, influenced by the rhythms of folk, blues, and rock.

Moments in history where sovereign rights to fish and hunt were tested; how treaties are recognized and celebrated; a highly commemorated site making history.

Host Bret Amundson tags along on a northern Minnesota elk hunt, and learns the impact of PFAS, known as Forever Chemicals, on the environment.

Removing and saving the kitchen cabinets for reuse; tackling the chimney teardown; foundation plans.

Upgrading a home to a solar-assisted split heat pump water heater; three common houseplant pests and simple tricks to banish them; installing an attic ladder.

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.