In April 2003, I wrote an essay for a competition run by Shell Oil and others, titled Nurturing Nature. The premise of the essay is that in order to preserve biodiversity, we must proactively manage life's evolution. That is, we must understand how we are changing life--not only its loss through extinction, but its evolution through environmental change. Essentially, the article presents a Manifesto for Biodiversity. You can read more about it online in JungleWiki, or by downloading the PDF.