1. Facebook unveils social search feature: Called "graph search," the new service lets users search their social connections for information about people, interests, photos and places.
2. American Idol returns: "American Idol" is facing a $36 million-plus question: Will that
combined paycheck lavished on superstar judges Mariah Carey, Nicki Minaj
and Keith Urban pay off in ratings for opening night on Wednesday?
3. Newtown shooting survivors record song for charity: Children who survived last month's shooting rampage at Connecticut's Sandy Hook Elementary School have recorded a version of "Over the Rainbow" to raise money for charity.
4. One World Trade Center gets taller: Workers at the rising 1 World Trade Center on Tuesday installed the first piece of the spire that will make the 104-floor skyscraper the tallest in the Western Hemisphere.
5. Inaugural words of Presidents: A sampling of inaugural addresses remembered for speaking eloquently to their historical moment...