Live Science: The ocean’s “deserts,” where it is difficult for marine organisms to survive, are expanding faster than predicted and have been linked to warming ocean waters, a new study shows. These barren areas are found in roughly 20 percent of the world’s oceans and are within what are called subtropical gyres, or the permanent swirling expanses of water in the middle of the ocean on either side of the equator. But between 1998 and 2007, these expanses of saltwater with low …