Yale Environment 360: Improvements in irrigation in the worlds driest regions could significantly boost food production and water sustainability, according to a new study. In an analysis of how water is used for 16 staple food crops worldwide, including in regions with similar climates, a team of researchers identified specific areas where major efficiency improvements can be made in the so-called crop per drop -- or the amount of food produced per liter of water. According to their findings, published in the journal...