1. Special Theme: The Gaia Hypothesis

   • Stephen H. Schneider

   Legacy Pages: 3 - 4

2. Testing the Effect of Life on Earth's Functioning: How Gaian Is the Earth System?

   • Axel Kleidon

   OriginalPaper Pages: 383 - 389

3. The Gaia Hypothesis: Fact, Theory, and Wishful Thinking

   • James W. Kirchner

   OriginalPaper Pages: 391 - 408

4. Testing Gaia: The Effect of Life on Earth's Habitability and Regulation

   • Timothy M. Lenton

   OriginalPaper Pages: 409 - 422

5. Toward a Future for Gaia Theory

   • Tyler Volk

   Editorial Commentary Pages: 423 - 430

6. Oversimplifying the Greenhouse

   • Donald J. Wuebbles

   Legacy Pages: 431 - 434

7. A Brighter Future

   • James E. Hansen

   Legacy Pages: 435 - 440

8. Can we Estimate the Likelihood of Climatic Changes at 2100?

   • Stephen H. Schneider

   Editorial Commentary Pages: 441 - 451

9. The Oxidation of Organic Compounds in the Troposphere and their Global Warming Potentials

   • W. J. Collins
   • R. G. Derwent
   • D. S. Stevenson

   OriginalPaper Pages: 453 - 479

10. Spatial and Temporal Variability in the Growth and Climate Response of Treeline Trees in Alaska

    • Andrea H. Lloyd
    • Christopher L. Fastie

    OriginalPaper Pages: 481 - 509

11. Paul C. Stern and William E. Easterling, Making Climate Forecasts Matter

    • Stanley A. Changnon

    BookReview Pages: 511 - 513

12. Volume 52

    Volume Contents Pages: 515 - 517

13. Author Index

    Authors Index Pages: 519 - 519