Fresh water is one of the most precious resources on the planet, and can mean the difference between life and death for all animals.

Animals on the African savanna's grasslands begin to feel the heat; their ability to survive is tested to the limit.

Animals living in the mountains have learned to adapt to the extreme conditions, but more are climbing to new heights as the planet's temperature rises.

The survival skills of wetland animals are being pushed to the limit as the balance is shifting due to global warming.