Kieran O'Donovan

Experience our planet's natural beauty and examine how climate change impacts all living creatures in this ambitious documentary of spectacular scope.

Gordon Buchanan heads to the Rocky Mountains in search of wild horses. Finding two stallions battling over a herd, he immerses himself in their world, hoping to win their trust.

Years spent recording footage of creatures from every corner of the globe is bound to produce a bit of drama. Here's a behind-the-scenes look.