John Gruber had a great interview on The Talk Show with Apple VP Lisa Jackson about Apple's environmental work:

Special guest Lisa Jackson — Apple’s vice president of Environment, Policy, and Social Initiatives — joins the show for an Earth Day discussion of the state of Apple’s environmental efforts: climate change, renewable energy, responsible packaging, and Apple’s new goal to create a “closed-loop supply chain”, wherein the company’s products would be manufactured entirely from recycled materials.

The whole interview provides a remarkable insight into just how passionate Apple is about their environmental impact on the world. I was particularly fascinated by the story of how the head of Apple's packaging department discussed the idea with Lisa of buying a forest so they could have a sustainable, protected paper supply.