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A unique site in southern England preserved rare traces of ancient ice age mammoths and Neanderthals; host David Attenborough.

The chance discovery of a jade artifact leads to the unearthing of an ancient city hidden in the mountains of Sichuan.

Follows the expedition of four climbers on their journey to the summit of Everest, just days after eight climbers lost their lives in a deadly storm.

Exploring the ancestry of actress Sharon Stone and model Chrissy Teigen includes traveling across Europe and Thailand.

Xavier learns that he is a special person just the way he is after he has a playdate with Fred Rogers.

Francine decides to start a paper; someone steals D.W.'s backpack.

While looking at shapes in nature, the Wild Kratts discover a sphere shaped "rock" that turns out to be a 3-banded armadillo; Zach challenges everyone to a bowling match.

Dev teaches a class of Beeples about dinosaurs, but not all the students seem interested; as an allergist, Cora investigates why the Beeples have a case of the squeakies.

Lily and her family discover a surprise and also embark on a weather hunting expedition.

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.

Daniel is excited about going to the library to get a new book, but first has to wait with Dad Tiger at Dr. Plat's office; Daniel can't wait to go to the playground, but first he has to go to the store to get new shoes for Margaret.

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

Elmo and friends have until the end of the day to set the record for the tallest cookie tower ever.

The Wombats program the "Toy Maker" when Mr. E's shipment is delayed; the Wombats track down a ruckus, discovering many noises along the way.

Grampy asks Donkey to take Gregory for a walk, but Gregory won't move; Harriett Elizabeth Cow wants her pals to try her invention -- the Bounce-a-rino.

Rosie and Javi's pirate adventure goes awry; Rosie has trouble choosing a job at the first Fun Club meeting.

The kids try to locate a missing Srta. Tapir at a music festival by listening for her drums; the kids try to track down a bird thief.

Molly is eager to help the Kratt brothers track a missing wolf pack; Molly and friends investigate a strange noise.

A group of Ayn Rand-inscribed books; Edward Borein watercolor circa 1930; a 1931 Carnegie hero medal; a visit to Crab Tree Farm.

A team of forensic experts excavate a giant Pliosaur skull, the largest Jurassic predator ever known.

The chance discovery of a jade artifact leads to the unearthing of an ancient city hidden in the mountains of Sichuan.

Follows the expedition of four climbers on their journey to the summit of Everest, just days after eight climbers lost their lives in a deadly storm.

A detailed look into news stories from around the world from the BBC news desk in Washington, D.C.

Presenting a round-up of the most recent news and developments from across the world.

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

A well-liked security guard is found stabbed to death, leaving behind his terminally ill wife; Max and Priya discover that the victim had an unsavory past filled with violence, racism and hooliganism.

Mike and his team explore the world of antiquities when one of the hosts of a hit series is found murdered.

An idyllic Shakespeare walk soon turns to disaster when one of the walkers is murdered and Frank becomes the prime suspect.

Behind the scenes with the cast and creators of the English mystery series "Grantchester.".

Chef Yia Vang connects with culinary experts and food makers to reveal the rich tapestry of food traditions.