Shami Chakrabarti says 'small innovations make a massive difference'

Watch Shami Chakrabarti at the Ashden Awards 2010

I saw the great potential of taking ingenuity and compassion and putting them together. People are not just talking about problems of sustainability, they are doing something about it, and they're doing small things, things that seem so small, but like all true genius, these small innovations and inventions make a massive, massive difference to people's lives.

Shami Chakrabarti is director of Liberty.