Book excerpt: The suburban lawn sprouts a crop of contradictory myths. To some, it's a green oasis; to others, it's eco-purgatory. Science writer Hannah Holmes spent a year appraising the lawn through the eyes of the squirrels, crows, worms, and spiders who think of her backyard as their own. Suburban Safari is a fascinating and often hilarious record of her discoveries: that many animals adore the suburban environment, including bears and cougars venturing in from the woods; how plants, in their struggle for dominance, communicate with their own kind and battle other species; and that ways already exist for us to grow healthier, livelier lawns.