In Southeast Alaska, there's an ice-bound Eden that harbors possibly the richest temperate rainforests of all. Where the coastal mountains meet the Pacific, lays the Alexander Archipelago, a remote island chain running for almost 300 miles along the Alaskan Panhandle. This frozen frontier is one of the last great wildernesses of North America. And a stronghold for the country's highest diversity of megafauna, feasting on the abundance of fleeting summers to make it through relentless winters.

Will Smith confronts his fear of nature on powerful white-water rapids in Iceland. "Over five expeditions, I've followed explorers into situations that were straight-up scary. It was worth it to discover the Earth's wonders. But your boy was tripping more than once. Because when I see wilderness, you know, nothing but nature, I get nervous because I don't understand it."

Will explore the strategy, deception and feats of engineering plants use to thrive in the changing weather of different seasons. In the face of conditions ranging from ice and snow to raging fires, survival is often a question of perfect timing - particularly when contending with intense competition and surprising predators.
In this episode, David Attenborough travels to Finland to show one of the most extreme examples of seasonal plant life in the Arctic Circle. He also travels to California to see how climate change is affecting giant sequoias. These ancient trees like all other seasonal plants depend on the predictability of the seasons and our current changing climate threatens their survival.

Plants that have developed to thrive in the desert, including cacti that grow in the shade of other trees and collect water in pleated trunks that expand and contract - but can also find themselves a host to other plants, like desert mistletoe. This programme also reveals how tobacco plants being eaten by caterpillars are able to summon the creatures' natural predators, and how tumbleweeds roll across the landscape, only unfurling and growing when they encounter rain.

David Attenborough explores the continent of Europe - a crowded continent transformed by mankind, capturing the challenges and triumphs of its wildlife. The documentary showcases remarkable scenes, from pelicans engaging in coordinated fishing tactics to the resilient Iberian lynx fighting for survival. Amidst Europe's evolving environment shaped by human impact, it emphasizes the importance of protecting wilderness to ensure the future of the continent's precious wildlife.
We will watch surprising encounters with elusive predators like wolves and lynxes living remarkably close to human communities. The documentary offers a unique glimpse into the intricacies of Europe's ecosystems and the delicate balance between its inhabitants and the changing world around them.

In the interesting second episode, we embark on a journey to the picturesque island of Sardinia. Here the people live in harmony with the land and with one another. Learn about this effortless lifestyle where work and play seem to be united and the result is longevity. In this episode, the documentary also explores the unexpected discovery of unusual longevity in a North American suburb. Their lifestyles, dietary habits, and sense of community contribute to the remarkable longevity observed in these regions.
The importance of a plant-based diet, social connections, and positive health behaviors is highlighted, offering viewers valuable insights into leading a longer, healthier life. Join us as we uncover the unexpected secrets that may forever change the way we approach health and happiness.