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From seaweed to beavers, innovators use nature-based solutions to tackle climate change in surprising ways.

DACA recipient and immigration attorney Luis Cortes Romero, the first undocumented attorney to argue a case before the U.S. Supreme Court, risks his legal status to join a highly visible legal team to fight the rescinding of DACA.

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

Exploring the unique evolutionary journey of woodpeckers and the role they play in every ecosystem, except Antarctica and Australia.

Examining Canada's animals and dramatic landscape, from the high arctic and tundra to the boreal forests.

DACA recipient and immigration attorney Luis Cortes Romero, the first undocumented attorney to argue a case before the U.S. Supreme Court, risks his legal status to join a highly visible legal team to fight the rescinding of DACA.

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

From building new water filters to a robot that uses acoustics to revive coral reefs, engineers reshape the natural world and create new human-made environments that align with society's needs.

Skagit Valley farm: the precision involved in growing seeds; Preserving zucchini crops; Vietnamese street food at Ba Bar in Seattle.

The four women travel to Seattle to meet each other for the first time, and reflect on the struggles they faced and the strength they found along the way.

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

Examining Canada's animals and dramatic landscape, from the high arctic and tundra to the boreal forests.

Soothing music and slow, gentle movements stimulate the lymphatic system.

Skagit Valley farm: the precision involved in growing seeds; Preserving zucchini crops; Vietnamese street food at Ba Bar in Seattle.

Paella cooked outdoors over an open fire; sautéed fish topped with colorful gazpacho vinaigrette.

How local farmers in Arkansas turn their farms into sanctuaries for migrating birds; deep-fried catfish and rice balls; jambalaya.

Sammy plans a surprise Carnaval for his dad while Quique plans a surprise treat for his son; Malik performs a magic trick.

Prince Tuesday visits the school in his crossing guard uniform and helps the children practice safety rules; Daniel and Katerina drift too far from Mom while playing at the beach.

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.

Donkey hosts Gator's game show for a day; Donkey joins the Balance Ball team but feels uncomfortable doing something new.

An argument between Xavier and Yadina ends badly, but Maya Angelou helps the siblings find a way to forgive each other; Frederick Douglass helps Xavier when he becomes frustrated with his schoolwork.

Grandpa Nat, Molly and friends go on a hot air balloon adventure in Rutan Hill, New Jersey.

Lyla and her siblings figure out a new morning routine so they won't miss the bus again; Lyla wants to learn a popular clap and dance sequence -- the Carrot Cake dance.

Phoebe, Jay, Grandma Annie and Pete create the family's first recipe for Sunday greens; Phoebe and Jay are excited about their first campout in the courtyard.

Alma wants to borrow a new book from the library, but so do all her friends; Alma borrows a ukulele from the library but doesn't want to return it.

Forrest makes too many plans on the same day; Carl and Arugula build an epic marble run but fail to get the marble to run.

The monarch butterfly's 2,000-mile migration.

Francine does not want her classmates to know that her father is a garbageman; Muffy spends a tough weekend at Francine's.

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

The members of Soundcheck go missing; all of Odd Squad gets a case of the jinx.

Ashton Applewhite, co-founder of the Old School Hub, talks about how ageism affects our health and happiness.

The emergence of shipbuilding, manufacturing, Prohibition, The Great Depression, World War II, Boeing, aerospace and post-war prosperity.

The roots of basketball pros Brittney Griner and Chris Paul.

Susan Reyland is corralled once again into the world of detective Attiucs Pund as he investigates the death of Lady Margaret Chalfont in the Greek isle of Corfu.