At the center of Deep Blue Home is Julia Whitty's penetrating exploration of the World Ocean as a single body of water connected by vast three-dimensional currents encircling the globe, each far more powerful than the Nile or the Amazon. This undivided body of water profoundly controls and is controlled by Earth's climate; its fate determines our own.   Her book provides extraordinary armchair entree to gripping adventure, cutting-edge science, and an intimate understanding of our deep blue home.   Julia Whitty's first book on oceans, The Fragile Edge, was awarded the John Burroughs Medal Award, the PEN USA Award, and the Kiriyama Prize. Her articles have appeared in Harper's Magazine and Mother Jones, where she is the environmental correpsondent an blogger at Blue Marble. Whitty lives in northern California.