Here are some books I've read and highly recommend for the eco-conscious parent. Note that all links lead to amazon.com, but make sure you check your local library before investing in one of these!
* Starred Items = Must-Reads
Raising Nature Kids
*Last Child in the Woods: Saving Our Children From Nature-Deficit Disorder by Richard Louv
Natural Eating
*In Defense of Food: An Eater's Manifesto by Michael Pollan
Animal, Vegetable, Miracle: A Year of Food Life by Barbara Kingsolver
Fast Food Nation: The Dark Side of the All-American Meal by Eric Schlosser
Food Rules: An Eater's Manual by Michael Pollan
The Omnivore's Dilemma: A Natural History of Four Meals by Michael Pollan
Children's Books
*The Lorax by Dr. Suess
In The Garden by Leslie Bockol
I Howl, I Growl by Marcia Vaughan
Nature Therapy
The Nature Principle by Richard Louv
Exercise During Pregnancy
Fit and Pregnant: The Pregnant Woman's Guide To Exercise by Joan Marie Butler, RNC, CMN