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When the Soviet Union falls, Russia welcomes U.S. astronauts to their space station, Mir, but cooperation between former Cold War enemies is threatened by a run of disasters onboard.

A look at how the telescope was invented, from Galileo to Edwin Hubble, and how the invention reaches the universe 13 billion light-years out.

Three bachelors embark on a seven-day dating camp where they try to make sense of their authentic and constructed selves and find the self-confidence they need to land a date.

A visit to a fire testing lab; adding roof shingles; installing a stone veneer; touring farms; an architect designs a town memorial.

Paul Revere Jr. silver tablespoons; a 1942 DC Comics promotional Superman figurine; a 1974 Sam Gilliam June 5 acrylic painting.

Stay informed with the latest breaking news and headlines.

Stay informed with the latest breaking news and headlines.

Experts analyze prominent international affairs topics and America's role in a shifting world.

Stay informed with the latest breaking news and headlines.

Lyla and Everett struggle to play Hot Cross Buns at the same tempo, and they learn how to read music; Lyla is upset when Luke's snack becomes popular.

Carl gets a universal screwdriver for his birthday; a storm creates a hole in the walkway to Carl's house.

Daniel is disappointed that he is not allowed to use his new toy float in the neighborhood pool; Daniel and Miss Elaina visit Ducky at the farm.

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.

Grover tries to cheer up Elmo, who is feeling sad after his dad leaves for a work trip.

The wombats invent a color game; Super invents a Piggyback rider.

Donkey is disappointed to miss Cheesy Con after she hurts her hoof; Stanley's pals help him get things back on track for his one-dragon show.

Things get out of control when Rosie starts a pet-sitting business; Rosie plays with a rock from Javi's rock collection.

While painting outdoors, Elinor and her class experiment with natural items that they find after they run out of paint; Elinor, Ari and Olive help Mrs. Hippo pick up litter.

A modified yoga practice focuses on opening the hips and elongating the spine while increasing circulation.

Strengthening and stretching every muscle and all connective tissue in the body.

Fort Mose in St. Augustine, Fla., was built in 1738 for freed slaves; an oil painting depicts a woman in period costume cooking an autumn feast over an open fire.

Learning about light; making shadow puppets; meeting a line worker and an electric eel; reading "Sandy Toes"; solving "The Case of the Soothing Solution"; playing the "Make Ten" math game.

As Jimmy Jam's Scrambler Machine scrambles Odd Squad communication, the villains plan to unleash oddness; Dr. Dry steals the Sandbeast's golden egg.

The Kratt brothers use a new archery skill to rescue baby animals from Donita Donata's yacht.

The Hunters find a stowaway in their picnic basket, a little furry dog.

Alma tells Junior a story about a magical place called Oz and a quest to see the Rubber Band Wizard.

Molly rushes to find a new gift for her new friend, Kevin; Grandpa Nat's new drone is swept away by a dust devil.

Grace Hopper shows Xavier that he will never know if he can build his robot differently than everyone else unless he tries; Itzhak Perlman shows Xavier that he can learn music his own way.

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.

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.

In Canada, a baby turtle ventures through a forest in search of the lake where she will spend the next 50 years; a young bush baby in South Africa searches for a new home.

NASA's New Horizons probe captures the first-ever detailed images of the icy world of Pluto.

The colorful world of Earth's essential pollinators -- bees, moths and butterflies.

Stay informed with the latest breaking news and headlines.

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

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