It's November at Cape Tatnam. Winter is coming to the lower Western shore of Hudson Bay. But the ice - which should be forming on Hudson Bay by now - is nowhere to be seen. 2016 has been the warmest year on record. In late November, the temperature is 10 degrees warmer than its average. Climate change is wreaking havoc across the North. At just below zero degrees Celsius, the sea cannot freeze.

Hidden in the jungles of Sri Lanka is the toque macaque. Endemic to the island, these feisty group-living monkeys are found nowhere else on earth. And they are at the heart of the longest primate research project ever undertaken. Dr Wolfgang Dittus is on a quest to understand their complex society.

Join the team's scramble to help a trio of distressed baby wallabies and a koala joey who's having seizures. Scale a tree with rescuer Jo to net a wounded lizard, see kookaburra feather-implant surgery, and admire a spoonbill's new corrective shoes.

Wade into recovery mode as the clinic deals with the animal aftermath of a Brisbane flood. Meet a baby kangaroo in need of round-the-clock care and a plover washed down a drain. Then size up the turtle waiting list that vet Karina patiently tackles.

Visit the last stronghold of the giant river otter in Brazil's beautiful Pantanal wetland. Track pup Rio and his siblings as they test the waters, team up to evade a jaguar ambush, and become a cohesive family unit that hunts and thrives together.

Wade into a saltwater marsh along the Connecticut River to witness the heartwarming reunion of two ospreys who've been mates for a decade. Witness their highs and lows over a single summer as they raise their chicks and dodge a host of predators.

Race the clock with biologists as they try to figure out why North American loons are suddenly in danger. Unlock the mysterious lives of these beloved birds, and ponder whether their cries will continue to be summer's soundtrack or go silent forever.

Sound waves are produced by movement. Animals have evolved organs to detect those sound waves in the air or water to perceive movements in their environment. This can be used to find prey, predators and mates. These are some of the animals that have mastered the sense of hearing.

Some of mightiest rivers in North America originate on the glacial heights of the Rocky Mountains. The lakes, rivers and marshes of the Rockies are like arteries pulsing through the landscape, feeding the creatures that call the mountains home. Fed by glaciers and motivated by gravity, these waterways are split by the massive Rockies, which divert flow into the Atlantic, Pacific, and Arctic Oceans. From the uninhabitable icy pecks, water melts off glaciers, runs down thunderous waterfalls, filters through wetlands, sculpts the terrain, and finally flows out to the ocean, sustaining life and transforming environments along the way.

Cabo Pulmo, a tiny ocean community on the shores of Mexico's Sea of Cortez, is home to an extraordinary story of marine recovery. By the mid-1980s, this near-pristine coral reef was all but wiped out - decimated by reckless overfishing. That is, until those same fishermen abandoned their way of life and fought to save what Jacques Cousteau once called 'the aquarium of the world'.

Palau is a tiny country with a big story. In 2009, this island nation in the middle of the western Pacific Ocean created the world's first shark sanctuary to protect more than 100 shark species from reckless overfishing and the brutal practice of commercial shark finning. Then, in 2014, Palau once again led the way. It established the world's largest marine sanctuary - a no-go zone for foreign commercial fisheries nearly the size of California.

Palau, a tiny island nation in the middle of the western Pacific ocean, is a land of giants. Large manta rays soar through its azure seas. Massive Second World War wrecks harbor dark secrets on the ocean floor. The archipelago is surrounded by a colossal underwater trench that reaches more than half a mile down into unseen depths. Its reef, one the largest living structures on the planet, is home to more than 1,500 species of fish.

March to the steady drumbeat of a unique avian family. Learn why the world's 239 woodpecker species, from massive to minute, are nature's best lumberjacks; explore their flying, climbing, and calling skills; and get a look inside their secret nests.

Deep in the South Caribbean Sea, explore the protected waters of Bonaire National Marine Park, home to thriving reefs, endangered sea turtles, sprawling mangroves, and a plethora of marine life.

Chilema is an Elephant with half a trunk; losing the tip to a poacher's snare. It was intended to catch antelope for bushmeat. But the snare's indiscriminate nature means other animals often fall foul of them, with devastating results. Chilema is now having to adapt to life without an elephants most important appendage. She must learn how to eat, drink and also take a mud bath to ensure her survival. With the added challenge of the harsh dry season, Chilema is fighting against the odds to survive.

Trees are Africa's oldest residents, and each has its own strategy for surviving the dry season. The sausage tree and the fig tree ride-out seasonal extremes, to provide food and shelter for struggling animals in the lean times. In return animals help these trees to reproduce by pollinating their flowers and dispersing their seed. African trees promote life, and form the backbone of one of Earths' most precious ecosystems.

The Hudson Bay lowlands are part of North America's largest wetland. Over 300,000 square kilometers of muskeg, a vast bogland as far as the eye can see characterized by water soaked peat, mosses and stunted trees. Once thought of as barren wasteland, it is now understood that these bogs are crucially important to life on earth. Globally, there is as much carbon dioxide held in wetlands as there is in the atmosphere. The peatland ecosystem is the most efficient carbon sink on the planet.

The Yukon is a true wilderness, one of the last on Earth. The vast land got its name from its longest river, which the Gwich'in, one of the indigenous people of the region, call "Yu-kun- ah", or, the "great river". The third longest waterway in North America, the Yukon River flows through wide open valleys and narrow channels over 3,000 km Northwest towards the storm tossed Bering Sea.

It's November at Cape Tatnam. Winter is coming to the lower Western shore of Hudson Bay. But the ice - which should be forming on Hudson Bay by now - is nowhere to be seen. 2016 has been the warmest year on record. In late November, the temperature is 10 degrees warmer than its average. Climate change is wreaking havoc across the North. At just below zero degrees Celsius, the sea cannot freeze.

Circle the equator for a look at the diverse species that dwell in tropical forests. Meet a lone sloth growing a mini-forest, lemurs that share and share alike, and elephants that tend to their woodland gardens. Then explore the region's dark side.

Watch the seasons wax and wane and learn how trees and animals help one another survive. Witness spring fireflies dancing after dark, discover summer fungi that cool off overheated trees, and prep for autumn migrations as the leaves begin to fall.

Wade into wetlands, where trees and water meet to nurture new life. Dive into an underwater forest that protects young fur seals, visit a mangrove sanctuary where a curious band of aquatic misfits hides out, and meet some real-life swamp monsters.

Climb into a realm of thin air and towering rock. Tag along as mythical monkeys battle for a winter food stash, sing along with lemurs in a fruit-filled tree canopy, and watch an aromatic tree bring together blossom and possum in a moonlit tryst.

Examine fire's pivotal role in shaping Australia's natural world. Tour the devastation left by 2020's brutal bush-fire season, learn how climate change fuelled this watershed event, and chart the long-term recovery of the continent's wildlife.

Trek across Africa for a peek at the colorful, quirky survival strategies of its animals. See these furry, feathered, and scaled magicians, from flamboyant flamingos to vanishing lizards, find food, elude predators, and find mates against all odds.

Nearly 20 hours of sunlight a day feed the season of abundance. Warmth unlocks water from the glaciers, ice caves and waterfalls. The water crashes into countless streams of the Inside Passage, feeding forest and wildlife alike. From June to August, Alaska becomes a paradise for it's wildlife.

Circle the equator for a look at the diverse species that dwell in tropical forests. Meet a lone sloth growing a mini-forest, lemurs that share and share alike, and elephants that tend to their woodland gardens. Then explore the region's dark side.