KETG-DT

Following Ariel Waldman's solo expedition through Antarctica's extreme environments as she documents the thriving microscopic wildlife beneath the ice.

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

Isabella Tree and her husband, Charlie Burrell, strive to breathe new life into the ailing Knepp estate. They reintroduce native ponies, deer, pigs and other wildlife, allowing nature to thrive.

At the Church of the Holy Sepulchre in Jerusalem, an orthodox Christian must deliver a holy flame into the hands of his bishop; at the Boudhanath in Nepal, a Buddhist painter battles the elements in honor of Buddha's birthday.

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

Incorporating a challenging pose, Hanumanasana.

An all-standing workout tones and strengthens every muscle in the body.

On their annual laundry day, the Kratt brothers disagree on whether blue oceans or green forests are better; Aviva demonstrates how oceans and forests work together.

Dot and Al announce the Hunters are spending Christmas in Nigeria, and Corky wonders if she can have a fun Christmas without snow.

Lyla struggles to sleep and tries to figure out what is wrong with her sleep routine; Lyla tries to do her own hairstyle.

Nico is tired of being mistaken for her twin sister; Carl is upset when Nico breaks the Lint Dinosaur Monday rules and makes a Lint Monster instead.

Mom Tiger shows Daniel the strawberry patch; crayons are made at the factory.

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

Cinderella needs to tell time for the ball, but her clock is broken, so Nina, Abby and Rudy wonder what tool they can use to fix it.

Mom Tiger shows Daniel the strawberry patch; crayons are made at the factory.

Donkey and Panda make up a game while waiting for Gameshow Gator's new game; Donkey and Panda disagree on which toys are fun.

Rosie, Crystal and Iggy try to recreate Mom and Papá's beach anniversary tradition at home; it's Chiles en Nogada Day, but when Papá loses the recipe, it's up to Rosie to figure out who else might have it.

Elinor finds a peculiar-looking owl while visiting her grandparents in the desert; Olive and her friends investigate why a tree has fallen over in the forest.

Alma and Rafia want to keep a bird's nest safe; Alma and her friends look for a litterbug.

Cinderella needs to tell time for the ball, but her clock is broken, so Nina, Abby and Rudy wonder what tool they can use to fix it.

Lyla struggles to sleep and tries to figure out what is wrong with her sleep routine; Lyla tries to do her own hairstyle.

On their annual laundry day, the Kratt brothers disagree on whether blue oceans or green forests are better; Aviva demonstrates how oceans and forests work together.

A Hassan el Glaoui tempera painting circa 1970; Line Vautrin Talosel mirror; a diamond horseshoe brooch circa 1900.

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

Rain transforms life at the waterhole, creating an abundance of food as mating and birthing seasons arrive; moderate weather makes it harder for predators as prey is able to migrate farther.

Bowhunting in Arkansas; fly-fishing for trout; preparing a recipe for turkey puffs.

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.

Some trees, such as American holly, sweet tupelo, bald cypress and dawn redwood have lives spanning hundreds of years -- influencing and inspiring the people around them.

Murdoch Foyle is still at large and has been connected with the mysterious death of antique dealer Albert Monkton.

A prisoner is killed while in the custody of DI Goodman and the team.

Twenty-four hours a day, the latest national and international stories as they break.

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

A rocky stream gently ripples through the forest mist.