Science is an international enterprise where discoveries in one part of the world are useful in other parts.

We live in an increasingly technological world where the issues are quite complex and based on some complicated science.

Science is curiosity, testing and experimenting.

My childhood and adolescence were filled with visiting scientists from both India and abroad, many of whom would stay with us. A life of science struck me as being both interesting and particularly international in its character.

It's for scientists to lay out the data and lay out what they think, and then it's for the public to make up its own mind. We don't live in a priesthood where some small group imposes its views on other people - that's not the way that science works, and it's not the way a democratic society should work.

People go into science out of curiosity, not to win awards. But scientists are human and have ambitions.