In 1998, I wrote a text book on the topic of "planetary biology." The point of the book was to evaluate life on Earth in the context of the whole planet.
This effort was very enlightening for me as it forced me to move fluidly between points of knowledge in many different scientific fields. As a result, I gained a much broader and more flexible understanding of life, the universe and everything.
Although I used this text for several years with my classes at Fullerton College, I eventually wrote another, more general environmental text -- which I am currently using.
Several people have asked me to make these chapters available again. I am happy to comply.
It has been over 10 years since I last touched these chapters, so they may seem a bit out of date. I haven't kept after them. Nonetheless, I hope that you find some surprising value in there somewhere.