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"Frontline" offers an unflinching and compelling look at complex, vital and often-controversial subjects. Each broadcast consists of a long-form news documentary. Topics run the gamut -- from Bernie Madoff's intricate fraud and prisoner abuse at Abu Ghraib, to AIDs, racial issues and Wal-Mart's effect on the U.S. economy.

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

The roots of director Spike Lee and actress Kristin Chenoweth.

Examining the Black and Jewish alliance from the 1970s onward, including political gains, global tensions, rising hate and the enduring lessons of solidarity.

"Frontline" offers an unflinching and compelling look at complex, vital and often-controversial subjects. Each broadcast consists of a long-form news documentary. Topics run the gamut -- from Bernie Madoff's intricate fraud and prisoner abuse at Abu Ghraib, to AIDs, racial issues and Wal-Mart's effect on the U.S. economy.

Nick can't remember the secret handshake that Sally invented for the treehouse; Over-and-Overton.

Granny May uses her coupon-printing press to get free things; Dr. 2-Brains escapes again.

The Super Readers help a caterpillar prepare for its transformation into a butterfly.

Jet, Sydney, Sean, Sunspot and Mindy organize a surprise birthday party; the children make posters to celebrate Earth Day.

Peg and Cat dance with Misty Copeland; Cat's ball bounces through 10 different worlds to 10 different beats.

The Super Readers help a caterpillar prepare for its transformation into a butterfly.

D.W.'s imaginary friend Nadine goes missing; Sue Ellen finds a mysterious diary onboard an old-fashioned train.

The Agents organize a party for villains; Agent Overhill is retiring from Odd Squad, but has one last villain to catch first.

Chris gets to see a fossa.

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

The Loops go on a scavenger hunt around the supermarket to solve clues to get tickets to "Oaty Zappers on Ice"; Lyla tries to act older so she can hang out with her cousin.

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

Daniel helps Grandpere clean up after he runs into his house with dirty shoes; O accidentally breaks Miss Elaina's robot.

Phoebe and Jay learn how to sort items; Phoebe and Jay learn how to make food labels, so everyone can participate in the potluck.

Elmo, Abby and Tamir come across a wooden cricket and learn that it's Dave's favorite Cuban musical instrument called a guiro.

Ellie's so excited to be going home to Jamaica that the Wombats and Mr. E start to worry whether she'll come back; Buckley comes over for a playdate with Zadie.

Esther McManus prepares croissants filled with almond, chocolate or pâté; b'steeya.

The crew travels to Atlanta to begin work on an 1890s Victorian.

Plants use strategy, deception and feats of engineering in order to survive the challenges posed by the different seasons.

From an orca mother teaching her young to hunt blue whales to a Banggai cardinalfish protecting his young inside his mouth, ocean parents master dedication and intelligence to raise their young.

Cast iron myths; cast iron care; cast iron steak; paper towel holders; roast butterflied chicken with rosemary and garlic.

Author Reem Kassis cooks maqlubeh, a multilayered chicken and rice dish worthy of a feast; hareesa; Palestinian upside-down chicken and rice; semolina-sesame cake with a crunchy sesame seed topping and sweet citrus syrup.

A Mickey Mantle all-star watch; an 1840 Texas artillery short sword; an Edith Parsons "Turtle Baby" fountain.

Exploring the home museum of Luciano Pavarotti in Modena, Italy; gelato; how Parmigiano-Reggiano is aged; touring famed car brands including Ferrari and Stanguellini; sampling historic balsamic vinegar; local Lambrusco wines.

A dark history haunts the scenic landscapes of the Vosges Mountains -- a tragic and heroic story from World War II.

Lawrence Douglas Wilder becomes the first elected black governor in the United States, as chief executive of Virginia.

Sabotage and gambling result in a murder; Foyle searches for the mother of a traumatized boy.

The short film "Jazz Proclamation.".

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

New evidence sheds light on Turkey's Gobekli Tepe, the world's oldest temple, and how archaeologists think about the roots of civilization.