Michael Pollan talks about a new way to see world change.

Author of The Omnivore's Dilemma, Michael Pollan is a wonderful lecturer on how to look anew at how Nature may be able to give us answers about the planet's future.
Watch him Here

And while we're on the subject you can check his guest blog here where you also find his eminently sensible rules for eating;

1. Don't eat anything your great-grandmother wouldn't recognize as food.
2. Avoid food products with more than five ingredients; with ingredients you can't pronounce.
3. Don't eat anything that won't eventually rot.
4. Shop the perimeter of the supermarket, where the food is least processed.
5. Avoid food products that make health claims.
6. Eat meals and eat them only at tables. (And no, a desk is not a table.)
7. Eat only until you're 4/5 full. (An ancient Japanese injunction.)
8. Pay more, eat less.
9. Diversify your diet and eat wild foods when you can.
10. Eat slowly, with other people whenever possible, and always with pleasure.