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The Permian Period ends with the biggest mass extinction of all time; more than 80% of species vanish, altering the course of evolution that is still felt 252 million years later.

Scientists explore glaciers, oceans and frozen frontiers to discover hidden worlds and clues to life beyond Earth.

The team witnesses a baby boom in the Delta; lioness Matho protects her cubs while the leopard Xudum reveals her newborns as danger looms nearby.

An exclusive journey into a cave that houses well-preserved Stone Age art of lions and mammoths, and how scientists are unlocking the secrets of these masterpieces of early human creativity.

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

A fluid sequence incorporating the Moon Salutation offers a chance to slow down and connect to some inner quiet.

Chris and Martin discover the abilities of the blue heron.

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

Lyla and Everett play basketball against their moms; Lyla and Luke restore their old toy car to make it special for Stu.

Carl can't wait for the ice cream festival; Carl is upset that he has to wear a cast on his broken wrist.

On the way to the post office, Dad tells Daniel he can't play at the park, and that makes Daniel mad; when Miss Elaina spills red paint on Daniel's project, he gets mad at his friend.

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

Rudy feels angry when Abby asks him to share his toys, so his friends make a movie to show that sharing can be fun.

Wombats unstick a stuck train; the group goes to Bellyflop Lake.

Duck Duck builds a book swap box but has trouble giving away her books; the pals throw a party for their Tater Buddy dolls.

Rosie and Papa switch roles for the day, but it's trickier than they thought; Rosie tries to make a family tree for Valentine's Day.

Elinor is intrigued when she and her friends find a plant that has grown in a zigzag; Elinor loves her butterfly suit, but how is she supposed to drink when her arms are now wings?

Alma wants to hang out with Eddie's friends, but doesn't like it when she starts to feel like a little kid; Junior becomes everyone's pretend little brother.

Molly makes a new friend, who teaches her a new dance; Molly makes a video to show off Qyah-style snowboarding.

Xavier learns that asking questions can lead to exciting discoveries; Xavier learns that it's normal to feel different emotions when it comes his turn to jump off the diving board.

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

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

A daily news summary from Europe with anchor Brent Goff.

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.

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

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

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

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

Margaret Hoover leads interviews and debates.

Honoring five individuals or organizations doing outstanding work in various fields to benefit the Hispanic and Latinx community in the U.S. and abroad.

The story of ASCO, the groundbreaking Chicano art group formed in the 1970s that continues to inspire new generations of artists and activists.

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

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