Paper or plastic bags? Cloth or disposable diapers? Aluminum cans or glass bottles? If you want to go green but are locked in frozen inaction by such environmental quagmires, take heart: The eco-experts behind the green news and humor Web site Grist.org get to the bottom of these and other puzzles of the universe in their new book, Wake Up and Smell the Planet.

Read on, and watch the layer of fog start to lift away.

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Excerpted from:

Wake Up and Smell the Planet by Grist.org, edited by Brangien Davis, © 2007 Skipstone.