WGBH

British singer-songwriter RAYE takes to the stage of London's iconic Royal Albert Hall to perform songs from "My 21st Century Blues.".

Peggy Cappy presents short exercise breaks that help strengthen and maintain the four pillars that support the body's structure -- strength, flexibility, balance and mobility.

Experiencing the complex world of ocean waters with a never-before-seen look at how life underwater co-exists.

Scientists and enthusiasts reveal the crucial roles bugs play on the planet and what the future would be without them.

Sculptor Leo Sewell uses discarded materials.

George volunteers to create a piece of art for the county-wide art show, but can't decide what to make; Arthur gets angry when a smoothie spills all over his new sneakers.

The Wild Kratts try to determine why trees are dying and how to help the forest and the creatures who live there.

Benny becomes enamored with the mail carrier, and wonders how she delivers the mail in different weather conditions.

Luke plays doctor with Stu as a nurse and Lyla pretends to be different patients; Lyla, Everett, Luke and Stu build an elaborate track to get a tennis ball down to the lobby.

Forrest can't wait to try everything at the Fuzzytown Friends Picnic, but gets into trouble when he is unable to wait his turn; Carl hosts a Super Blue Moon Sleepover.

Daniel's birthday cake is smushed during a bumpy ride on Trolley; Daniel, Prince Wednesday and Miss Elaina enjoy their picnic despite the rain.

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.

On a hot day, Abby creates a snowman to keep her and Elmo cool; when they return from finding decorations, their snowman has vanished.

Avesha's love for the outdoors is instilled by her father; Antonio turns a chaotic whale-watching trip into a memorable family adventure; Jenny chronicles her run across America.

Members of the Passamaquoddy tribe who have harvested blueberries for generations; exploring the dense forests, estuaries and harbors that produce Maine's oysters and lobsters; a chef creates innovative dishes with Maine seafood.

Glazy Susan donut shop in Worcester, Mass.; Mount Monadnock; Wozz! Kitchen Creations in Bethlehem, N.H.

Why the area around Kennett Square, Pa., is considered "mushroom capital of the world"; mushroom farm; mushroom ice cream; how to forage for wild mushrooms; cooking a mushroom feast al fresco.

Cassandra's first visit to Oregon includes spending time in Willamette Valley Wine Country; the stories of the Maysara and Cho family.

Experiencing the complex world of ocean waters with a never-before-seen look at how life underwater co-exists.

Astrophysicist Janna Levin explores black hole science.

With the dawn of the Space Shuttle, the U.S. gains ground on Cold War rivals; a pioneering class of astronauts takes flight, but when an accident occurs, NASA are left reeling.

Actors Billy Crudup and Tamera Mowry-Housley uncover their lost roots.

An old threat returns to Setauket; Abe tries to protect Anna; Rogers travels to a prison ship in search of a mysterious man.

Anna searches for intelligence at Andre's exclusive gentleman's party.

Simcoe plans to weed out rebel conspirators in Setauket through a political witch hunt; Ben is assigned to a secret mission.

A woman is found dead in the botanical gardens; Patience suspects foul play and falls out with Frankie who needs convincing; Patience tries to deny her feelings for Elliot.

Cathy's triumph at CeCe's turns dark when a club manager is found dead; Geordie uncovers a web of extortion.

Spanish flu reaches Downton, and desperate Thomas looks for a way to re-establish himself. Ethel faces a dilemma when the Bryants return with a heartbreaking proposition. Decisive, Anna forces Bates to think about their future.

The Grammy award-winning superstar performs pop hits and Broadway favorites at her final concert in Las Vegas on New Year's Eve 1999.