Robert Ballard, the explorer best known for the discovery of the Titanic and other wrecks, has not only made deep-sea exploration more accessible for K-12 and college students, but he'll feed them updates through two of their favorite web sites: Facebook and Twitter. Ballard visited the Mystic Aquarium and Institute for Exploration in Connecticut on June 23 to introduce his new Nautilus Live Theater, along with a new web site where people can watch his expeditions live.