IT’S A SUNNY SPRING DAY at NASA’s Jet Propulsion Laboratory outside Los Angeles when I show up at Kevin Hand’s office to talk about his work with Ridley Scott on the new film, Prometheus, a sort-of prequel to the Alien series. But it seems only polite to ask first about the trip Hand has just returned from: a quick expedition to the middle of the Pacific Ocean with another star director, James Cameron, who was taking a custom-made submarine on a historic dive to the deepest point on Earth. Cameron spent three hours at the bottom of the Mariana Trench, 33,000 feet below the sea, the ... Read More