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Examine the fragile interdependence that exists between forests' wide variety of residents, including bald eagles, hunting dogs and Siberian tigers.
The need for fresh water is as strong as ever. However, the supply is becoming increasingly unpredictable for all manner of species.
The ambitious four-year project has been filmed in 50 countries across all the continents of the world, with over 600 members of crew capturing more than three and a half thousand filming days, and will focus on the breadth of the diversity of habitats around the world, from the remote Arctic wilderness and mysterious deep oceans to the vast landscapes of Africa and diverse jungles of South America.