The Full Form of MAB is‍ Man and the Biosphere.

Man and the Biosphere Programme is an intergovernmental scientific programme, launched in 1971 by UNESCO, that aims to establish a scientific basis for the improvement of relationships between people and their environments.

The MAB programme is an intergovernmental scientific programme that aims to establish a scientific basis for enhancing the relationship between people and their environments. It combines the natural and social sciences with a view to improving human livelihoods and safeguarding natural and managed ecosystems, thus promoting innovative approaches to economic development that are socially and culturally appropriate and environmentally sustainable.

The World Network of Biosphere Reserves currently counts 701 sites in 124 countries all over the world, including 21 transboundary sites.