We are not only what we eat, but how we eat, too.

To eat with a fuller consciousness of all that is at stake might sound like a burden, but in practice few things in life afford quite as much satisfaction.

The whole of nature is a conjugation of the verb to eat, in the active and passive.

If you're not hungry enough to eat an apple, you're not hungry.

It's very important to get out, to do reporting. It's also really interesting. I come at it as a journalist, and I think that's helped me, and I come at it as someone who sees nature wherever he looks, and that helps.

Food is also about pleasure, about community, about family and spirituality, about our relationship to the natural world, and about expressing our identity. As long as humans have been taking meals together, eating has been as much about culture as it has been about biology.

We could have a greener economy, even a greener consumer economy by changing the rules - whether it's by taxing carbon or trading carbon, I'm not sure what - but in the end there's just a fundamental problem with the sheer amount we're consuming.