I strongly recommend ...
1. Armand Marie Leroi's own book.
2. His comments on (ahem) a certain non-scientist's views as covered in this article
http://www.butterfliesandwheels.com/articleprint.php?num=16
A PDF of his paper "Cancer Selection" is found here:
http://armandleroi.com/images/pdf2.gif
Fixing link to paper:
http://armandleroi.com/research/pdf/Leroi026.pdf