After happily ever after : so, what's the secret to a happy marriage?

Summary/Review: Filmmaker Kate Schermerhorn looks for the secret to a happy marriage and for answers to some timely questions about an institution that might just be due for some review. Why do 90% of Americans marry when half of those marriages will end in divorce? What better alternatives, if any, exist? Is marriage entering a new phase, a better and more flexible one or is it becoming obsolete?