Jerusalem has been a religious and historical hot spot for millennia, and yet it still manages to surprise the experts. Why does the city continue to yield unexpected revelations about the days of King David and Jesus — seemingly in plain sight of its residents? One big reason is that it's devilishly difficult to tease out the history of a place where every acre is closely guarded and deeply coveted. "It's a living city, and it's a city that's been inhabited continuously for thousands of years,"Jodi Magness, an archaeologist at the University of North Carolina at Chapel Hill, told NBC News. "Unless, God forbid, the city is ever completely abandoned, we'll never get a complete picture." Magness is one of the scientific stars of a new movie titled "Jerusalem." The movie, opening this week, takes advantage of IMAX 3-D technology to produce an ultra-big-screen vision of the city, its history and its people. On one level, the film...