When even your Grandmother's been on Facebook for years, the novelty is long gone, and Instagram has emerged as a kind of anti-Facebook. Now that Facebook is buying Instagram for a billion dollars, we'll look at what changes might be in store for the online universe. Also, what's next for Kim Jong-sun after failed North Korea's rocket launch? On Reporter's Notebook, 100 years after it sunk in the North Atlantic, the Titanic is good for business. We hear about commemorations in places with historic ties — and places without them.
Banner image: Photo-sharing app Instagram fan page is seen on the Facebook website. Photo by Karen Bleier/AFP/Getty Images