Cradle to Cradle: Remaking the Way We Make Things
William McDonough and Michael Braungart
A mind widening proposition that our manufacturing processes are extremely limited due to convention as opposed to actual effectiveness or efficiency.
Second Nature: A Gardener's Education
Michael Pollan
Many people have read The Omnivore's Dilemma which I have not so I can't comment at all on that one but here I found the author very insightful in his commentary of how we live down to the tradition of manicured front lawns in the US and what they mean... Very mind opening and a great writer to boot
The Last Hours of Ancient Sunlight
Thom Hartmann
The damage being created as fossil fuel supplies are used and are eventually extinguished