Borealis

The boreal forests of the north are home to wolves, elk and tigers — and they store more carbon than every rainforest on Earth combined, making them essential to the planet's climate. Across permafrost buried under metre-deep snow and summers defined by drought, the conifers and ground cover here have evolved alongside fire; some species even depend on flames to reproduce.

But human-driven warming has pushed those fires beyond anything this ecosystem evolved to handle — too frequent, and too severe, for the northern forest to keep pace.

Borealis pairs breathtaking aerial photography with deep dives into the evolution, ecology and biodiversity of this climate zone, following its inhabitants — from the largest predators to the smallest ground-cover plants — along the way.