It's all a far cry from what could be described as the comparatively sober, 'traditional' Indian corporate approach to sustainability, rooted in a long tradition of philanthropy. It's a tradition which has been absorbed smoothly into the relatively recent concept of corporate social responsibility (CSR).

The question is how do you find and finance solutions to these problems - that aren't sexy, lucrative or easy to solve - and where solutions are likely to be found at grassroots, by people who are close to their communities, who might not find it easy to source funding on the high street?

When we use the phrase social enterprise, we all intuitively understand that is in some way different from an orthodox view of how industrial enterprises operate, how they are organised, what is their role and purpose, by which I mean whom do they really serve? And, how in part they make their money. We have to ask therefore - what is the true nature of the social enterprise?

From teeny-tiny sleeping bags ending infant mortality to soccer balls that produce electricity, a new documentary shows how fresh solutions to old pro...