It's really a great movie, so I suggest you go and watch The Day The Earth Stood Still. This film stars Keanu Reeves and Jennifer Connelly and is a movie remake of the classic science fiction and fantasy film from 1951.
The first movie was about the war of countries. This time however, after I Watch The Day The Earth Stood Still Movie, I learned that it's now all about the environment. Yes, it is about taking care of Mother Nature.
This is a great movie. The lesson of the movie is also important. So I hope you too will Watch The Day The Earth Stood Still.