Director James Cameron is now the first person in history to plunge to the Earth’s deepest point all by his lonesome. By scraping together his nickels and pennies, the director of art-house flicks Titanic and Avatar built a state-of-the-art vessel capable of diving seven miles to the ocean floor to … actually, we’re not sure what Cameron planned to do down there. One thing he definitely did, however, was tweet during the trip.
