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Three bicyclists and a pair of community leaders find peace, redemption and clarity during RAGBRAI, the Des Moines Register's annual Great Bicycle Ride Across Iowa.

Filmmaker Katy Scoggin seeks to reconnect with her estranged father.

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

Scientists work to safeguard the future of the world's primates.

Filmmaker Katy Scoggin seeks to reconnect with her estranged father.

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

Astrophysicist Janna Levin explores black hole science.

Washington Grown visits barley farms, highlights brewing culture, enjoys Spokane flavors, and traces Washington's post-Prohibition revival.

Jovanna faces divorce and rising bills; Kristina rebuilds after losing her fiancé while raising four children; Ashley works three jobs while raising two sons; firefighter Amber works nonstop but still struggles to get ahead.

Cinematographer Vianet Djenguet fulfills his dream of embedding himself within a wild gorilla troop, joining Kahuzi-Biega National Park rangers in the Democratic Republic of the Congo.

Scientists work to safeguard the future of the world's primates.

Stretching improves flexibility.

Washington Grown visits barley farms, highlights brewing culture, enjoys Spokane flavors, and traces Washington's post-Prohibition revival.

Simit kebabs; pear salsa and quince liquor; meatball tapas with peas; making Moroccan meatball tagine with couscous in the slow cooker.

Three recipes that don't need an oven -- seafood gazpacho, grilled steak salad with mushroom and tomato and watermelon screwdriver.

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

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.

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

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.

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.

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

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.

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.

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

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

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

Buster starts an archaeological craze when he finds an arrowhead; Arthur attends a medieval fair.

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

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

Exploring ancient Istanbul, the crossroads of Europe and Asia.

Archaeologists map underwater ruins of ancient Rome's version of Las Vegas.

Actresses Debra Messing and Melanie Lynskey explore the stories of their ancestors whose bold decisions reshaped their families.

A murder near Bishop Grey's home exposes corruption within the church's inner circle, shaking Alphy's faith; Geordie secures his long-awaited promotion; Leonard returns to his calling.