Has reading Ehrlich sparked your interest in the field of nature writing? Would you like to explore the field a bit further? Well, take a look at this Yahoo.com directory about nature writing.
This page contains the citation for Ehrlich's 1998 National Magazine Award. Which of the other authors on this page do you recognize? What methods could you use to find out more about them?
Here's an abstract about American nature writing, linking John McPhee's writing with Ehrlich's. If you wanted to find more about this abstract, what research methods would you employ?
This is a student essay about Ehrlich's work. How comfortable would you be citing it for a paper of your own? How did you come to your conclusion?