Searches are personal. My first piece in Scientific Blogging was about the Copenhagen Congress. The 11-day conference will start tomorrow. So I did a search for you on climate and energy in my own writing here. At the end included also is the must-read list for Copenhagen from Nature.
List of must-reads from

Our Choice: A Plan to Solve the Climate Crisis by Al Gore

Six Degrees: Our Future on a Hotter Planet by Mark Lynas

Challenged by Carbon: The Oil Industry and Climate Change by Bryan Lovell

Seeing Like a State: How Certain Schemes to Improve the Human Condition Have Failed by James C. Scott

Kyoto2: How to Manage the Global Greenhouse by Oliver Tickell

Why We Disagree About Climate Change: Understanding Controversy, Inaction and Opportunity by Mike Hulme

The Sustainability Mirage: Illusion and Reality in the Coming War on Climate Change by John Foster

Whole Earth Discipline: An Ecopragmatist Manifesto by Stewart Brand

Climate Change 2007: Synthesis Report by Rajendra K. Pachauri and&Andy Reisinger