From the author of the #1 <I>New York Times</I> bestseller <I>Inside of a Dog</I>, this “elegant and entertaining” (<I>The Boston Globe</I>) explanation of how humans perceive their environments “does more than open our eyes...opens our hearts and minds, too, gently awakening us to a world—in fact, many worlds—we’ve been missing” (<I>USA TODAY</I>).<br><br>Alexandra Horowitz<I> </I>shows us how to see the spectacle of the ordinary—to practice, as Sir Arthur Conan Doyle put it, “the observation of trifles.” Structured around a series of eleven walks the author takes, mostly in her Manhattan neighborhood, <I >On Looking</I> features experts on a diverse range of subjects, including an urban sociologist, the well-known artist Maira Kalman, a geologist, a physician, and a sound designer. Horowitz also walks with a child and a dog to see the world as they perceive it. <I>What </I>they see, <I>how </I>they see it, and why most of us do <I>not </I>see the same things reveal the startling power of human attention and the cognitive aspects of what it means to be an expert observer.<BR> <BR>Page by page, Horowitz shows how much more there is to see—if only we would really look. Trained as a cognitive scientist, she discovers a feast of fascinating detail, all explained with her generous humor and self-deprecating tone. So turn off the phone and other electronic devices and <I>be </I>in the real world—where strangers communicate by geometry as they walk toward one another, where sounds reveal shadows, where posture can display humility, and the underside of a leaf unveils a Lilliputian universe—where, indeed, there are worlds within worlds within worlds.