EarthX

A sea lion has a potentially deadly tangle of fishing gear around its neck; a creek becomes dangerous for a dolphin.

Two sisters go on a ride along with the Sea Rescue team and end up helping to save a sick elephant seal; students rescue an ailing turtle on the beaches of Cape Cod.

Following clean drinking water from forests to faucets; beetle kill wood; military veterans find peace while fly-fishing in mountain streams.

Chuck Leavell begins his journey in the Arkansas Ozarks rafting down the Buffalo National River, where he learns how forests help keep groundwater clean; in Conway, he tours a mass-timber plant and learns about forest economy; at the U of Arkansas the topic is sustainable architecture; and after a trip to the Ozark National Forest, Chuck plays some music at an underground, limestone cavern.

Tom the Blowfish Hird reveals the moray eel's jaw-dropping abilities, blows bubbles to show how a snail can sail, showcases the fearsome barracuda and shows how the whale shark survives on plankton.

Tom the Blowfish Hird shows how stingrays pierce their prey and more.

A brilliant October sun rises out over the islands of Penobscot Bay; hillsides blush red, orange, and yellow, migrating waterfowl seek out marshes, and ancient lichens overtake glacial boulders.

Part 2/3. In the beautiful Chilean lake district, Nick tries his hand at the new sport of hydrospeeding, visits a seaweed processing plant, meets a white witch, and learns a traditional method to cook mussels.

Big wave surfing's elite break routines and converge to ride an unforgettable swell at Mavericks.

Colton and Jack set out to hike the nine peaks of the Presidential Traverse in White Mountain National Forest in New Hampshire.

Jack and Colton return to Katmai National Park in Alaska to find one of the last remaining known volcanic steam vents in the Valley of 10,000 Smokes.

Taking to the ice on dog sled to see how the Inuit hunt in an extreme environment.

Part 1/2. On the first leg of Ash Dykes' journey along the Yangtze River, Ash must beat the onset of winter and get off the plateau before he gets snowed in.

The glacial outwash plain in Wyoming, with rolling hills and a nearby creek make this excellent summer habitat for Rocky Mountain elk, mule deer, and the rare pronghorn at dawn.

Niall investigates the impact of human living conditions on the leopard's choice of prey and the conflict with the people of Mumbai.

Chuck Leavell explores Minnesota's winter wonderland, meets the conservationists restoring the moose population, snowmobiles through the boreal forest, and visits the birthplace of Bob Dylan.

In Arkansas' Delta Region, Chuck celebrates Black music in Helena, Arkansas, home of the Delta Blues, then visits Bayou DeView, the Big Woods, the Arkansas Timberlands, and Ouachita National Forest.

Lasers ignited a successful nuclear fusion reaction for the first time, but there still are obstacles to overcome to move fusion technology into something we can really use. What forecast is realistic?

A new future demands we transform how and where we live; from smart cities and carbon capture to rewilding the earth, we discover how humans can redesign, restore and regenerate our future planet.

A thorough look at how Charmin toilet paper drives forest destruction, harming people and wildlife, while offering hope through consumer action.

Fall in love with our planet and the extraordinary people striving to make it a better place.

Rescuers travel to Nicaragua to try to save threatened and endangered sea turtles from extinction; a helpless harbor seal pup is tangled in a deadly nylon fishing net.

A sea turtle stuck in a salt pond could die of dehydration unless rescuers can treat him in time; a sick dolphin gets lost in a murky canal.

The compelling story of African-American tree farmers in South Carolina who trace their land back to the end of slavery.

In Arkansas' Delta Region, Chuck celebrates Black music in Helena, Arkansas, home of the Delta Blues, then visits Bayou DeView, the Big Woods, the Arkansas Timberlands, and Ouachita National Forest.

Tom Hird explores the lobster's crushing claw, a sea cucumber's alarming survival tactics, the super-sucking jaws of pipefish and why bobbit worms are true ocean nightmares.

Tom the Blowfish Hird explores the polar bear's smelling superpowers, challenges a velvet swimming crab to a drag race and demonstrates why the saltwater crocodile is the king of crunching.

Will Skudin and Keali'i Mamala deal with the trials and tribulations of life as traveling big wave surfers.

Professional wingsuit pilot Jokke Sommer and big wave surfer Niccolo Porcella meet in Hawaii to attempt to become world-class athletes in each other's sport.

After surviving a harrowing "flat spin" in his wingsuit, Niccolo decides to give the surfing-rodeo stunt another try.

In Chile's Torres del Paine, melt from snow-covered mountains feeds finger-like fjords as they reach out to the sea to join the current, lowering its salinity and becoming home to wading birds, rare dolphins and orcas.

Will Skudin and Keali'i Mamala deal with the trials and tribulations of life as traveling big wave surfers.