A global tour examining the behaviors of animals and revealing the effects of climate change on their environments.

An exploration of the world's major mountain ranges and the habitats they create.

Although merely 3% of water on earth, fresh water plays an important part in the planet's weather and erosion. It is immensely important for all non-marine wildlife, which drinks fresh water and swims, procreates, hunts in it. Its concentrations, such as rivers, lakes and swamps, abound in aquatic and other species, often adapted to 'wet' life.

Although often overlooked, caves are remarkable habitats with bizarre wildlife. Explore the structures created inside the earth as well as the adaptations animals have made to thrive in these environments.

Despite the lack of rain, deserts are the most varied of our ecosystems. In fact, about thirty percent of the earth's land surface is covered in desert. Explore the unique conditions present in deserts as well as the survival mechanisms developed by the animals that inhabit them.