K21IR-D

How discoveries over the past 50 years have revolutionized people's understanding of the universe.

From Kenya to Mexico, people and wildlife find a harmonious balance in Earth's most vulnerable landscapes.

Ground-breaking discoveries; going to extraordinary lengths to save wild canids around the world, from endangered wolves to injured African wilddogs.

An Italian hotel proprietor's autograph book; Margaret Keane "Big Eye" painting; collection of 1936-1939 Edward Weston photographs.

Actor Michael Douglas and writer/director Lena Dunham explore their family roots.

Miranda Esmonde-White offers an exercise program for people of all ages and fitness levels.

Mary Ann Wilson leads safe workouts set to fun music.

Martin encounters a lost colony of black-footed ferrets.

Corky is selected to make a presentation at school during a science day celebration, but humidity jeopardizes her project.

Lyla figures out how to do a magic trick with clues from Miss Emmaline; Luke finds a puppy.

Arugula and Carl go on an adventure as archaeologists; Carl spots a UFO on Mother's Day.

Things don't go as planned when Daniel and Dad Tiger spend the day together; Daniel and Mom's day together includes turning her old wagon into a trolley.

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

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

All aboard the Moo Moo Choo Choo; visiting great uncle Duper in the Windborhood; world's biggest whirligig blows away; helping great uncle Duper imagine how to build a new one.

Donkey babysits a baby yodel bird who won't take a nap; Donkey and Panda argue while playing superheroes.

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

Ari grows impatient waiting for ketchup; Elinor, Olive and Ari have to figure out how to expand their clubhouse to fit all the new members of The Explorer's Club.

Alma, Eddie and Junior play a late-night game with Steggie; Alma decides she wants to play piano.

Molly uses Indigenous knowledge to spot a storm.

Mary Anning inspires Xavier and Yadina to continue working on a tricky art project; Charlie Chaplin helps Yadina cheer up Dr. Zoom.

The story behind David Attenborough's wildlife documentary series "Life on Earth," which changed his life forever.

Matagorda Island, the traditional homeland of the Karankawa people and World War II training grounds; surfer Ellis Pickett advocates for the public's right to free and unrestricted access to Texas beaches.

Anglers and scientists fight to save native oysters; researchers steward millions of acres of critical wildlife habitat to benefit millions of migratory birds.

Biologist Shane Campbell-Staton travels the globe to explore how humans have transformed the planet.

Collectors discover that they can turn trash into treasure, thanks to the appraisal skills of the show's specialists in antiques and fine art.

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.

How two non-profit innovators are tackling the problem of food waste; project LA Kitchen is simultaneously aggregating wasted food, using it to cook fresh meals for those in need, and providing workforce training.

Visiting a town centered between two of Texas' largest cities; BBQ and jerky at Woody's Smokehouse; fishing; picking blackberries; a steak served in a backroads general store.

Exploring three distinct stories of change, where enterprising Texans rise to meet the moment.

A journey across the Lone Star state, from coastal shores to the rugged West, to meet the people protecting more than one million acres of diverse Texas lands.

Rockers Pat Benatar and Neil Giraldo present a career-spanning hour of classic rock hits including "Heartbreaker," "We Belong" and "Love Is a Battlefield.".

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