“I’m a man on a mission,” says Seth Siegel, author of the newly released Let There be Water: Israel’s Solution for a Water-Starved World (Thomas Dunne Books/St. Martin’s Press). “My goal is to raise consciousness about the danger of not having a plan to address the coming water crisis. Hundreds of millions of people could find themselves without adequate water in just a few years, and this is not as high a priority as it should be.”