Knowledge Network

Actress Judi Dench investigates the history of trees, their relationship with mankind and their importance to the future.

Still reeling from the discovery that her husband murdered an 11-year-old boy, Detective Sergeant Ellie Miller and the other residents deal with the aftermath.

Los Angeles is home to over 13 million people who collectively make up one of the most multicultural places in the world; with over 80 neighborhoods making up a rich, diverse hub, LA's polycentrism is certainly its greatest asset.

Filmed over a year, this series captures Wales' varied wildlife and stunning landscapes, from the rugged mountains of the north to the seabird colonies off the west coast.

When a tiny piece of trash ruins a raccoon's life, Doctor Jessica cuts it free, but Hope faces tough decisions about its future; a volunteer plunges in to save an injured goose.

Lila and Marco, two creative children, bring to life a quintet of knitted gnomes with whimsical journeys in a cozy universe made of wool.

Tiny thinks she followed the instructions carefully, yet her bumblestalk plant doesn't grow as quickly as Tall's.

Best buddies Luna, Chip and Inkie are always eager to lend their friends a wing, paw or tentacle because helping others is what they do best.

When Dana visits for the weekend, Dex convinces her and her friend Riley to play her old DIY board game.

The Game Catchers land on Planet Rock, where they meet three little aliens who suggest playing Lions and Hares.

Andy becomes Prince of the Beatniks in San Francisco; the gang rides a cable car.

A green carpet of slime is creeping across the planet, and the future is slippery!; the team goes back in time to discover a Crock-brand scheme is to blame; lucky for them, they have a new secret weapon to help them keep the future from falling down.

A young Broccoliosaurus isn't tall enough to reach the delicious blooming flowers high in the trees until Ginger and the Baby Pea-Rexes come up with an ingenious way to get to them.

The pals search for the culprit who nabbed a crab's spiral shell home.

Nick and Sally go to Jumpalaroo to learn how to jump higher.

Brad learns that asking questions can help him feel less afraid; overcoming a challenge.

Isadora wants to impress her cousins, but her overconfidence leads her to charm three mischievous brooms that create havoc.

When the Squirrels find Duggee playing the saxophone, they want to have a turn too.

After the cleaning machine destroys Mr. Picard's house, the Adventure Rangers gather citizens to surprise him by fixing it up.

Ella challenges Slippy's hide-and-seek record using Nanny's "Hide and Peek" gadget. After finding Gem, I.Lo, and Madhu, the game intensifies as Slippy remains hidden. The search becomes difficult when the device's fuel supply unexpectedly runs out.

A curious and dreamy rabbit called Molang and an inquisitive little chick called Piu Piu are inseparable best friends who always have a wonderful time going on adventures together.

Sparks' Crew is on a training mission to find their schoolmates, Petie Heat and Freeze Louise, who are hiding somewhere in Citytown; the team follows hot and cold clues to lead them to find their friends.

Jackson's sheep ruins Preston's flower festival, unless Mojo and Bo can round them up!

During a long walk in the countryside with Duggee, the Squirrels begin to get tired, but they are still a long way from home; luckily for them, Duggee has his singing badge.

Joe is convinced he's not good at fishing but finding a little forest spirit in distress he uses his other skills to lead a successful fishing style rescue.

When Digi and Tal's space vacuum breaks, it's up to the pups to save Mayor Humdinger from falling space debris; Humdinger's cuckoo clock goes out of control; Ryder and the Pups must rescue Travis and get control of the cuckoo to save Humdinger.

Zack and Lily set out to find the leafiest place in the forest. But when they get there, they find there are too many leaves.

Emily Elizabeth and Clifford pretend to be Library Fairies as they help Mrs. Clayton gather book donations for the library; but when Clifford's favorite book accidentally gets donated, they're worried they'll never be able to find and get it back!

When Big Dog comes for a play date, Peg and Cat line up several crazy games; cat grows unsettled by something.

Re gets the hiccups and thinks that there's no way she can sing a special song to celebrate Maestro Moon while bouncing around.

Based on the illustrated books of Maurice Sendak.

When Teeny Terry believes he's an actual superhero, Abby has to keep up the illusion so his feelings won't get hurt.

Best buddies Luna, Chip and Inkie are always eager to lend their friends a wing, paw or tentacle because helping others is what they do best.

Cali gets lost in the woods; Daring Danny X's harness becomes loose while kite-surfing; he must fix it before he gets hurt.

Deema has a loose tooth; the Guppies learn about keeping a healthy smile.

Welcoming kids ages three to five to a world full of possibilities and teaching how to deal with setbacks in a meaningful way while promoting the development of self-efficacy and self-confidence.

The everyday adventures of Carl, an autistic raccoon, who loves collecting things.

Luc discovers the importance of speaking up and saying 'no' when Lola turns into a tickle monster.

The home and social life of a sensitive and imaginative 4-year-old boy, and the supportive family and friends that help him navigate his big feelings.

During a sleepover at Nana and Dadó's, the electricity unexpectedly fails, prompting Maddie and Triggs to devise alternative ways to enjoy time with their family.

Quack throws a party to get some attention, but doesn't know what to serve.

Lexi organizes backyard block games, but they're too hard for Ricky; they must alter the games so that everyone can play.

The Super Monsters decide that they should make a card for every person in Pitchfork Pines.

When Ollie and Moon set out to help baby turtles in trouble, Ollie discovers that wearing a cape isn't what makes you a courageous hero.

When Joe and his friends forget Mishoom's message and pick too many crabapples, the baskets tip over and roll downhill.

Strut, Dotty and Zack attempt to scout for the perfect place within the airport to put in a new windsock.

Daredevil Tao doesn't know how to fly his wingsuit. But Mojo and Bo can help with that!

Disaster strikes when Andy helps a paleontologist assemble a dinosaur skeleton in Buenos Aires, Argentina.

The Squeaky Peepers cause Fuzzly trouble when Abby uses them to deliver packages to the guests.

The salamander's mother wonders why there is no water in her lake.

Ginger and the baby Pea-Rexes search for honeysuckle, leaving behind a trail of berries so they can find their way back.

Mojo and Bo were supposed to paint fresh lines on the street. But when they get into a race with Tao, the paint goes in every direction, causing wild traffic chaos.

Ally asks a real panda what gift she should get for her stuffed panda Pammy.

When the cadets are put in charge of running the lifeguard club all by themselves, it proves to be a tough, and most rewarding, day in their lives.

In the future, hordes of snails are taking over; the team goes back in time to discover Crock's zest for perfection and profit might have started it; but stopping it will require a Scrooge-style look at Crock-past, -present and -future.

Best buddies Luna, Chip and Inkie are always eager to lend their friends a wing, paw or tentacle because helping others is what they do best.

Snoopy finds out Lucy's definition of fun; coaches Charlie Brown in a potato sack race; lets his imagination run wild thanks to Sally's new bike.

Barry and Hayley's adventure in the UK continues at a rehab center where they use the latest in alternative therapies.

In Devon, Anita Rani visits a haunted village, learns about a wartime disaster and discovers the secrets of Agatha Christie.

On an escape that brings back childhood memories, Martin Clunes braves the elements with wildlife cameraman Hamza Yassin as they go camping in the Inner Hebrides.

Mary Cassatt made a career painting the lives of the women around her. Her radical images showed them as intellectual, feminine and real, which was a major shift in the way women appeared in art.

Michael travels from the Thar Desert in Rajasthan to the Indian capital of New Delhi, taking in desert landscapes and historic palaces; a camel ride to a village where life has changed little in centuries.

The mystery of the sphinx in the British Museum.

The Taku River Tlingit Nation in northern BC has successfully replaced diesel power through their implementation of clean, renewable energy.

Mary Cassatt made a career painting the lives of the women around her. Her radical images showed them as intellectual, feminine and real, which was a major shift in the way women appeared in art.

Michael Portillo embarks on an adventure to India to experience the country through its extensive railway system. Portillo brings with him a copy of Bradshaw's Handbook of Indian, Foreign and Colonial Travel which was published at the zenith of the British Raj in 1913. Following its century-old advice, Portillo travels through mountain ranges, deserts and vast plains to visit palaces and temples.

The mystery of the sphinx in the British Museum.

The Taku River Tlingit Nation in northern BC has successfully replaced diesel power through their implementation of clean, renewable energy.

Faith and Evan's divorce and custody battle goes from bad to worse; Lisa continues to offer support to Faith; an unwanted visitor returns.

The Shanghai Maglev is the fastest passenger train in operation in the world; uncover how engineers are able to design a train that could levitate, and reach a remarkable top speed of 268 mph.

When a tiny fawn gets hit by a car, Doctor Jessica must splint its broken leg, or it will never return to the wild; a mother porcupine arrives with baby in tow and both need life-saving attention for a parasitic infection.

Lila and Marco, two creative children, bring to life a quintet of knitted gnomes with whimsical journeys in a cozy universe made of wool.

Tiny tries to do a good job decorating for the upcoming flower festival; the patterning proves to be problematic for her assistant, Tall.

Best buddies Luna, Chip and Inkie are always eager to lend their friends a wing, paw or tentacle because helping others is what they do best.

Kayla makes Dex a Dino Boy and Rock Girl comic book where they save the dinosaurs from being wiped out by the meteorite.

The Game Catchers land on the Porcelain Planet and learn the game Long Jump; the Game Catchers reach the Jelly Planet and learn the game Pillow Riding.

Andy becomes Prince of the Beatniks in San Francisco; the gang rides a cable car.

The future is down to two last Arctic hares, and the kids go back in time to find out why; Crock, as usual, is to blame; but this time - are the kids to blame as well? And can they outwit Crock's master computerbot?

Ginger challenges the Baby Pea-Rexes to a race around Vegesaur Valley with no rules; first one in the waterhole wins.

A group of monkeys are eating leaves at a jungle resort; one monkey is feeling sick, and the other monkeys believe that she has been poisoned.

Nick and Sally draw a butterfly.

Benjamin Banneker shows Yadina that overcoming a challenge can make a person feel proud.

Isadora and Zoe are delighted when Mignonette asks them to help her find the pot of gold at the end of the rainbow!

When Egg the chick goes on the run, Duggee whistles to get him back; the Squirrels want to know how to whistle.

Best buddies Luna, Chip and Inkie are always eager to lend their friends a wing, paw or tentacle because helping others is what they do best.

The Ryders shield their home and the moon museum from a coming Starquake. When the shield fails, the girls save the moon collection while their parents fix the system. Thanks to Maggie's warning, everyone returns home just before the quake hits.

In prehistory, Molang and Piu Piu burn the chief's mask and get excluded from the tribe; to rejoin, they become fashion designers.

The kids are surprised to see their teacher, Mr. Sparks, on the weekend, outside of school; when Mr. Sparks loses an important package, they must save the day without the use of the superhero technology they usually have with them.

Daredevil Tao doesn't know how to fly his wingsuit. But Mojo and Bo can help with that!

Naughty Monkey arrives at the clubhouse and causes chaos; he later returns to his home to relax, when his cousins come to visit and are even naughtier than he is.

Out late to view the Northern Lights, the friends race to rescue Buddy's run-away drum before it rolls off a cliff, then playing it to celebrate the dancing lights in the sky.

Mayor Humdinger's birthday party goes horribly awry when Marshall Kitty gets trapped inside a life-sized piñata; Mayor Humdinger tries pushing fog into Adventure Bay, it's up to the PAW Patrol to find animals missing in the clouds and save the day.

Axle tries to race carrying heavy logs.

When Emily Elizabeth and Clifford learn the legend of Babette, the giant, mysterious white whale of Birdwell Island, they go whale watching to try to catch a glimpse of the legend.

Trouble comes to Mathtropolis when someone changes all the shapes to arches.

When Re hurts her tail, her friends try their hardest to keep her calm and let her body heal.

Based on the illustrated books of Maurice Sendak.

While playing in the snow, Abby leaves a trail of buttons to help find their way home, but a snowfall covers the trail up, causing the friends to become lost.

Best buddies Luna, Chip and Inkie are always eager to lend their friends a wing, paw or tentacle because helping others is what they do best.

Carlos and Tracker are stranded on an island while searching for buried treasure.

Molly's friend needs the Guppies' help to finish her work in time to attend the Big Beach Ball.

Welcoming kids ages three to five to a world full of possibilities and teaching how to deal with setbacks in a meaningful way while promoting the development of self-efficacy and self-confidence.

The everyday adventures of Carl, an autistic raccoon, who loves collecting things.

When Sam starts his own singing messages business, he's willing to share the work with Amala, but will he share the power?

The home and social life of a sensitive and imaginative 4-year-old boy, and the supportive family and friends that help him navigate his big feelings.

While searching for unique sounds that their bodies can make, Mum introduces Maddie and Triggs to one of the tiniest sounds of all, the sound of their own heartbeat.

Beaver Boy cuts down too many trees.

Bea has a hard time waiting for her birthday; Ty and Lexi try to distract her.

The Super Monsters use their superpowers to help their friends and neighbors send heart-friend greetings to loved ones who live far away from Pitchfork Pines.

After Ollie and Moon become the world's worst tour guides to some picky parrots, only some super special pierogies can save the day - they hope!

When Joe finds a small carved owl, he knows that it must belong to someone in Turtle Bay.

Axle gets stuck in a gully and Zack and Rex know they can figure out a way to get him out, but they'll have to try a few times to get it right.

Nori and Preston set out to build a massive Swoppiton-style stone circle; the heavy stones quickly overwhelm Mojo's crane, requiring extra muscle to finish the job.

Carmen, thinking of herself as an international cowgirl, wants to be a gaucho.

Abby loses her glasses and relies on Bozzly and Princess Flug to get them back.

The duo must figure out why bats are suddenly sneezing after waking up from their winter sleep.

A magnificent gorge allows for some fantastic echo calls; the sound bounces all over the place creating brilliant musical melodies; who knew the baby Pea-Rexes could create such amazing harmonies?

Mojo and Bo need to decide what top would be best for delivering parcels around town; whether it's by land, water, or high in the air, they need to get those parcels delivered.

Nick is trying to make his mother a surprise lunch, but she keeps coming into the kitchen.

Boats are mysteriously disappearing in the "Barramundi Triangle"; Frizzy is convinced it is the work of ghost pirates, while Gemma believes in a logical explanation.

The Galapagos X Team heads off on its first test mission to take the future back, but they accidentally travel back to the wrong time and Bobbi is bird-napped by future-enemy Doc Crock.

Best buddies Luna, Chip and Inkie are always eager to lend their friends a wing, paw or tentacle because helping others is what they do best.

Charlie Brown finds a potato chip; Woodstock moves into a new nest; Snoopy gets distracted cleaning his doghouse.

Off the coast of Maine, the Fox Islands are a sparsely populated archipelago where seafood abounds and the atmosphere is serene.

The twisting history of Charles Byrne, the Irish Giant.

With climate change re-shaping their environment, the Kluane First Nation is looking to wind, solar, biomass and geothermal energy to empower their people into the future.

An exploration of some of the breakthroughs that show the Earth as a vast, changing system, including plate tectonics and the forces that drive them, the way life has shaped the planet and the dynamic chemistry of the atmosphere and oceans.

A collaboration between Indigenous leaders and a master puppeteer celebrates the return of the buffalo through a luminous performance.

Filmmaker Elle-Máijá Tailfeathers turns the camera on her own community of the Kainai First Nation in Alberta to document its fight against the opioid crisis.