K27GM-D

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.

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

A variety of award-winning short films.

The Desert Botanical Garden in Phoenix; chef Jeremy Pacheco; glass artist George Averbeck; exploring Sedona, Ariz., by jeep; Barrio Bread in Tucson, Ariz.; beekeeping.

Freddie and Ty learn the artistic process behind self-portraits to express themselves.

Governments and utilities battle cartels, corruption and budget shortfalls to supply electricity to new urban citizens; urban grid expansion in Kibera, Africa's largest slum.

This daily news program, produced by Japanese public broadcaster NHK, focuses on headlines and current events in Japan and other Asian countries. English-speaking presenters also cover other areas of interest, including business news, science and technology trends, sports highlights, and global weather forecasts.

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

Building endurance and power in the quads, one of the largest muscles in the body.

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

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

Unexpected humidity threatens to jeopardize Corky's video for the science day celebration at school.

Lyla and Luke clean their room with help from Stu; Stu learns how to play hide-and-seek.

Nico and Arugula start a hamster sitter business; Carl is afraid to tell his Mama that his new shoes hurt his feet.

Daniel and Prince Wednesday discover a small lizard in Daniel's backyard; Daniel and his friends learn more about their favorite Neighborhood Trolley.

Power Paige accidentally creates a Slime Storm; the pesky letter p's are causing chaos all over Reader Valley; everything in the park is disappearing -- including Princess Presto.

Elmo's bike is great, but Abby's bike might be even better; Tamir teaches Elmo how to deal with feeling jealous and to enjoy the things Elmo already has.

Elinor learns that the forest does its own composting; Elinor and her friends want to build snow-friends, but the snow isn't sticky enough.

Super babysits Herbert while the Wombats help organize his surprise birthday party; Sammy's mom, Yolanda, organizes a fun photo scavenger hunt.

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.

Daniel and Prince Wednesday discover a small lizard in Daniel's backyard; Daniel and his friends learn more about their favorite Neighborhood Trolley.

Nico and Arugula start a hamster sitter business; Carl is afraid to tell his Mama that his new shoes hurt his feet.

Elmo's bike is great, but Abby's bike might be even better; Tamir teaches Elmo how to deal with feeling jealous and to enjoy the things Elmo already has.

Phoebe and Jay create a game show for Grandma; Phoebe and Jay must find the best way to spend the community coin jar money by taking a building-wide vote.

Mr. Piragua Man names a new flavor after Alma; Alma wants to keep playing with balloon animals, but André doesn't want to play anymore.

Molly, Trini and Nina go out to pick cloudberries to make a pie for Molly's mom; Molly and Tooey find a strange box under the floorboards and discover something valuable inside.

Martin and Chris borrow Aviva's half finished night vision goggles to search for a mysterious nocturnal creature in the Indonesian forest.

Agent Opal and Agent Omar uncover the whereabouts of a legendary artifact.

An impact investor brings big ideas to life; an author and content creator helps communities see that finance isn't a foreign language; a private equity investor shapes the future of global sports investment.

An entrepreneurial investor loves to build by raising capital and creating community; commercial developer in Philadelphia helps neighborhoods thrive; the team reunites in New York to learn about aligning dollars to impact while still driving profit.

The Southern Blue Ridge escarpment has served as a refuge for life during changing climates.

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.

A pocket watch with fob chain circa 1885; a 1942 Donald Duck animation cel; a New England miniature chest circa 1825.

Louisa May Alcott "Little Women" books from 1869; Samuel Prince desk and bookcase made around 1775; a child's swan sled circa 1880.

Archival footage, photos and home movies shot in Cuba tell the story of Neill Macaulay, one of the few non-Cubans involved in the Cuban Revolution, and his wife Nancy.

Filmmaker Nick Beaulieu navigates racial justice and a personal reckoning with his conservative father.