spoilers:
the president dieing, how the storms worked and just in genral the minor things in the story. i admit with wasnt the best movie personally i give it 3 out of 5 or 2.5 out of 4. and for once it diidnt really have a happy ending where through some super nuclear power they were able to reverse to storm and make every thing normal again. the other scary thing is that so mush of the book was based on accepted science theory on the worlds climate, and what is actually happening int he world today, the political scene, the climate scene. io was shocked that they even mentions the geniva conference. overall though the movie had a sub-par story, the effects, acting, background info and the genral reaction of the world were very good and made up for it.