On a molecular level, Ric Roman Waugh’s “Greenland” is a global disaster picture like any other disaster picture: there is a disaster (natch) that strikes across the world (of course) and the picture’s focus lands on the shoulders of one ordinary guy with family problems who hauls maximum ass to not only rescue his family from said disaster but also reconcile said problems. However, the sameness that relates “Greenland” to films of similar ilk is a matter of nature, and its surprising goodness is a clear matter of nurture. Waugh gives a damn about his material, procured by screenwriter Chris Sparling, and his cast, and in retrospect perhaps he cares about context, too.