Without its pack, a wolf is a far lesser threat, and the other animals know it. However, for the lost bison calf, trapped on a small island, a lone wolf is a mortal danger, one that would take a minor miracle to survive.

Ed Sheeran sings about someone who makes his heart take flight even when he’s beset by worldly worries. In the music video, Ed, a self-proclaimed Pokémon fan, interacts with a variety of these tiny animated creatures.

A young bison calf is swept away by the icy torrent as the herd crosses a river. Against the odds, it washes up on a small island, but with night approaching, and its mother nowhere in sight, the outlook seems bleak for this little one.

For this song, 1980s English pop band Talk Talk were inspired by the book The Dice Man by Luke Rhineheart, in which the main character rolls dice to determine his daily actions. As Talk Talk’s singer songwriter Mark Hollis once quipped, “A good book, but not a lifestyle I’d recommend.”

As soon as it can stand, a young bison calf follows its mother and the herd, even through rivers of ice cold melt water. Meanwhile, the carcass of a bison that did not survive is fought over by wolves and grizzly bears.

When a boy’s noisy skateboarding gets on the nerves of an older man, the pair enter into an unexpected dialogue from which both may be able to learn and grow.

Yellowstone is home to a small cougar population, but theyare rare and seldom seen. The noisy ruffed grouse or “thunder chicken” is far less elusive, as the males “drum” their wings loudly in the breeding season, advertising their presence to any nearby female birds.

“Into the Unknown” was a hit song from the movie Frozen 2, in which Elsa has to overcome her doubt in order to track down the source of a mysterious voice she keeps hearing. This version played as the movie’s end credits rolled, and was performed by the American rock band Panic! At The Disco.

Sigrid finishes preparing her simple lunch using the wild greens she had gathered that morning.

Warm sunshine melts the last of the winter snow, and in the valleys of Yellowstone, animal mothers give birth to their young, bringing them into a beautiful yet perilous world.

Californian hip hop collective the Black Eyed Peas scored a global success with this song that questions the values of the modern world and the society we live in, and deals with issues such as racism, terrorism, pollution, gang crime, war, and intolerance. When hatred grows, and people and nations oppose each other, there's one question we find ourselves asking.

Creatures large and small, from the bison to the ephydrid fly, make use of hot springs to survive the coldest winter months. Others, like the bears, hibernate, emerging ravenous when the weather finally warms, and ready to scrap for whatever food they can find.

Back home, Sigrid works out on her terrace preparing the greens she has picked. She will cook the lambsquarters, but she'll eat the purslane raw, as a salad. She also has some regrets about one missed opportunity.

Food is scarce during the harsh winter months, and the battle to survive is intense. The successful wolf pack hunts constantly to feed each hungry mouth, and the weary bison must dig through layers of snow if they are to feed at all.

Gaby Moreno sings plaintively, asking how long she might wait for her beloved’s return... it’s as if she knows that this relationship has already slipped through her hands.