1. Mental content and evolutionary explanation

   • Colin Allen

   OriginalPaper Pages: 1 - 12

2. Wittgenstein and ant-watching

   • Deborah M. Gordon

   OriginalPaper Pages: 13 - 25

3. What is hierarchical selection?

   • Ben Goertzel

   OriginalPaper Pages: 27 - 33

4. An ecological approach to biosystem thermodynamics

   • Lionel Johnson

   OriginalPaper Pages: 35 - 60

5. On the relationship between evolutionary and psychological definitions of altruism and selfishness

   • David Sloan Wilson

   OriginalPaper Pages: 61 - 68

6. Philosophical ideas and scientific practice: A note on the empiricism of T.H. Morgan

   • N. Roll-Hansen

   Discussions Pages: 69 - 76

7. Biology intersects religion and morality

   • Kevin J. Sharpe

   Reviews Pages: 77 - 88

8. What price optimality?

   • Barbara L. Horan

   Reviews Pages: 89 - 109

9. Darwin's legacy

   • Michael Bradie

   Reviews Pages: 111 - 126

10. Booknotes

    Legacy Pages: 127 - 131

11. Errata

    Erratum Pages: 133 - 133