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E1. Dark
50 mins | 21 Oct 2024
The dark, a world of opportunity for mammals. More than two-thirds prefer the cover of the night, with some now returning to the safety of the shadows in order to avoid us.E2. The New Wild
49 mins | 22 Oct 2024
For millions of years, mammals have evolved to master every environment on Earth, but the planet is changing rapidly, all thanks to one mammal in particular - humans. As mankind reshapes the face of the world, mammals must change ....moreE3. Water
48 mins | 23 Oct 2024
Water presents air-breathing mammals with some of the greatest challenges of any environment on Earth. Less than 2% of mammal species are considered truly marine mammals. Witness some of the most intimate and surprising behaviours....moreE4. Cold
48 mins | 24 Oct 2024
Having honed their survival strategies over millennia, mammals have evolved to be masters of the cold. We journey across the globe, exploring a frozen world, from icy seas to snowcapped mountains and meet the unique mammals that c....moreE5. Heat
48 mins | 25 Oct 2024
By pushing themselves and their bodies to the absolute limit, mammals have found remarkable ways to survive in the hottest places on Earth. From baking deserts, harsh dry spiny forests, barren desolate salt pans and even raging bu....moreE6. Forest
49 mins | 28 Oct 2024
Sir David Attenborough reveals why forests are the ultimate test of survival for mammals and how they have overcome the challenges of life in this multidimensional, complex and continually changing environment.