WRET-DT

New Horizons prepares to fly by an object known as MU69 on Jan. 1, 2019, which is expected to be the most distant flyby in NASA's history.

A Formosan pangolin searches for a mate in a protected forest in Taiwan; a family of golden-headed lion tamarins travel to a strange new world in Brazil's Atlantic Forest.

The ruthless realm of some of the stealthiest and cleverest insects in the animal kingdom -- from praying mantises and aquatic insects to dragonflies.

The arrival of the International Space Station promises a new era of cooperation in space.

Panelists explore the challenges and dilemmas around online sports gambling and its impact on young men.

Traveling in classic cars in Kent, "Downton Abbey" Phyllis Logan visits the impressive collection of a controversial conservationist, while "Pirates of the Caribbean" Kevin McNally reveals just how much he knows about the universe.

Folk singer Ella Jenkins teaches a song with movements; Fred Rogers and his grandson pretend to be elephants.

Arthur wakes up in a strange part of town when he falls asleep on a bus; summer vacation is ending too quickly for Arthur.

The Tortuga is overtaken by skunks.

Benny's toy penguin is swept away by melting snow, transforming a day of sledding into an urgent rescue mission.

Lyla, Luke and Everett look for buried car keys at the beach; Lyla and Everett write a Super Stu comic.

Carl and Nico argue over who gets Arugula as their magician's assistant; Sheldon tries to help Carl become a good listener.

Codie helps a little cricket get home; Codie learns to be more specific when choosing pizza toppings; on Halloween, Codie learns some games are random and uses careful choices to build a winning costume.

Ginger leads the Baby Pea-Rexes home through a shortcut and gets lost, refusing to admit defeat, she suggests they find an even better bed to spend the night.

Floating plastic trash impacts the Portuguese island of Madeira; researchers study the effects these plastics have on the health of marine mammals that frequent local waters.

Aloquia helps businesses manage excess fabric in an attempt to bring down CO2 emissions from the fashion industry; Cummins in Indiana pivots to build hydrolysis equipment that creates hydrogen fuel from renewable sources.

April De Simone, co-founder and partner of Designing the WE.

News analysis of issues and policy affecting the U.S.

Author Scott Anderson explains the history of American Iranian relations, with a special focus on the Islamic revolution in Iran.

A new generation of farmers build a sustainable agriculture system.

A couple having issues communicating about their finances seek advice.

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.

Newsmakers and policymakers in studio with host Gavin Jackson.

English troops mobilize to invade Quebec; the Treaty of Paris ends French occupancy in North America.

After Brick Pollitt (Paul Newman) injures himself while drunkenly revisiting his high school sports-star days, he and his tempestuous wife, Maggie (Elizabeth Taylor), visit his family's Mississippi plantation for the 65th birthday of his hot-tempered father, Big Daddy (Burl Ives). Cantankerous even with declining health, Big Daddy demands to know why Brick and Maggie haven't yet given him a grandc

Everyday photographer Carol Highsmith wakes up with one mission -- to document every nook and cranny of the United States, from its mountains and quirky roadside attractions to unforgettable characters both known and unknown.

A well-liked security guard is found stabbed to death, leaving behind his terminally ill wife; Max and Priya discover that the victim had an unsavory past filled with violence, racism and hooliganism.

The career of actor, director and producer Robert Redford, including his work promoting independent film through the Sundance Film Festival and Institute and his commitment to environmental and political causes.

Patience and Frankie are held hostage by an armed escaped prisoner claiming she is innocent; personal secrets start to emerge.

In the aftermath of the siege, Geordie fights for his life; Alphy tracks a fugitive through the countryside; the Grantchester family must face final questions of love, redemption and forgiveness.

Cora's mother sweeps into Downton for Matthew and Mary's wedding, but with the couple's relationship under strain they might not make it to the altar.

Singer-songwriter and producer Finneas takes the stage to perform songs from his solo outing "For Cryin' Out Loud!".