California is working hard to sustain the range of beautiful and unique animal life within its borders, and San Diego Zoo is at the forefront of these efforts.
The zoo, one of the most famous and pioneering in the world, has helped to revolutionised the way such centres work.It has transformed them from tourist attractions into organisations working to sustain endangered species.
It has also fostered the idea of keeping animals in open spaces, mimicking their natural habitats, rather than keeping them locked in small cages.
The programme also tells of the zoo's collaboration with China to help protect the Giant Panda from extinction, and how the Californian Condor was brought back from the brink of extinction in the late 1980s.
Sustainability in California is a series showing the ingenuity and cutting edge technology that California is applying to clean energy, biodiversity and creating sustainable buildings.