There is a growing recognition of the importance of really bringing pollution under control.

Everyone else has some interest in economic growth and development, which often happens at the expense of the environment and community. We need the other side to join this to check and balance.

I hope they can see that as a consumer, if they express themselves, they may make an impact and leverage their impact on the brands, and the brands can leverage their buying power on tens of thousands of polluters - suppliers - in China.

What we aim to do, through public pressure, is help the environment protection bureau to enforce the law.

If we brought the mammoth back to Siberia, maybe that would be good for the ecosystems that are changing because of climate change.

I think the kind of landscape that you grew up in, it lives with you. I don't think it's true of people who've grown up in cities so much; you may love a building, but I don't think that you can love it in the way that you love a tree or a river or the colour of the earth; it's a different kind of love.

You frighten a lot of scientists. If they say that climate is not changing, they lose their research grants. And some people cannot afford that; they become silent, or a few of us speak up, because we think that it's for the honesty of science, that we have to do it.

No occupation is so delightful to me as the culture of the earth, and no culture comparable to that of the garden.