Davina begins her journey in Namibia, one of the hottest countries in the world, where from the desert dunes to the arid bush land, temperatures there can reach 50ºC degrees and years can pass without rainfall.

Davina travels to the Azores, a small group of remote islands in the middle of the Atlantic Ocean. Beneath the surface of the waves is a world brimming with life and a playground for some of the world's deepest diving creatures.

Davina travels to the islands of Svalbard in the Arctic Circle. It's a harsh environment set across 15 million square kilometers of sea ice, where temperatures can drop to minus 40 degrees Celsius. Just 800 miles from the North Pole, her journey begins in Longyearbyen, one of the most Northerly towns in the world. Written by Enzedder

Davina travels to the Costa Rican jungle, one of the wettest places on earth, a habitat in which animals thrive. Even with near 100 per cent humidity, and being less than a quarter of the size of the UK, it's home to a staggering 500,000 species of life. Written by Enzedder

Mini series presented by Davina McCall that explores the most extreme environments on the planet.

Mini series presented by Davina McCall that explores the most extreme environments on the planet.

Mini series presented by Davina McCall that explores the most extreme environments on the planet.

Mini series presented by Davina McCall that explores the most extreme environments on the planet.

Mini series presented by Davina McCall that explores the most extreme environments on the planet.

Mini series presented by Davina McCall that explores the most extreme environments on the planet.

Mini series presented by Davina McCall that explores the most extreme environments on the planet.

Mini series presented by Davina McCall that explores the most extreme environments on the planet.

Mini series presented by Davina McCall that explores the most extreme environments on the planet.

Mini series presented by Davina McCall that explores the most extreme environments on the planet.

Mini series presented by Davina McCall that explores the most extreme environments on the planet.