I saw brilliant ideas coming out of the [Chipko] movement that needed better articulation, that needed elaboration and systematic analysis. I just followed that and it's been very exciting.

My travels through physics really are the same urges that make me travel through ecology. They are not really different, except that there is an added dimension of seeing ecological destruction and seeing the very life-support system that makes us survive on this planet being destroyed. That makes me do more than just inquire; it compels me to act and to intervene.

Given that I was interested in physics, I think it was easier for me to do physics in India.

For us, not cooperating in the monopoly regimes of intellectual property rights and patents and biodiversity - saying "no" to patents on life, and developing intellectual ideas of resistance - is very much a continuation of Gandhian satyagraha. It is, for me, keeping life free in its diversity.

I started out in nuclear physics. But after I became more sensitized to the environmental and health implications of the nuclear system - I was being trained to be the first women in the fast-breeder reactor in India (and was in it when it first went critical) - I didn't feel comfortable with it. So I went into theoretical physics.

The Chipko activists have always been close to my parents, since my father was among the few forestry officials who supported them within the bureaucracy. And I was involved with the Chipko movement in my student days.

I do sculpting sometimes when I have the time, and the first thing I sculpted was a bust of [Albert] Einstein. It still sits on my table and still inspires me. He was a person who triggered my imagination and my ideas.