Like most of the celebs, even actor Richa Chadda considers herself responsible for bringing about a change in the society.

On asking her how she fulfills her duties as a citizen, Richa tells CS, `When I was in Delhi, I used to contribute to an NGO that helped people adopt injured dogs and cats.

I want to do much more than that because I fully understand the need for known faces to contribute to the society's welfare. There are so many issues in Mumbai itself.

Take for instance, rainwater harvesting. It's hard to understand why Mumbai faces water shortage despite the ample rainfall. I hope to do something in this particular field.`