The United States government's Justice Department formally launches a lawsuit to block AT&T's takeover of Time Warner, saying it will hurt competition and raise rates for consumers. Plus Nestle might be a bidder for organic food maker Hain Celestial, as both companies face pressure to restore growth. And Fox settles a $90 million shareholder suit stemming from sexual harassment claims, one of several filed in the wake of allegations against former anchor Bill O'Reilly and ex-exec, the late Roger Ailes.