On March 26, 2012, Avatar director James Cameron piloted his mini sub, the Deepsea Challenger—which he designed with engineer Ron Allum—to the deepest spot in the ocean, the 6.8–mile-down Mariana Trench. It was only the second time mankind had reached that depth, after Don Walsh and Jacques Piccard made the trip in 1960 in the U.S. Navy’s hollow-steel bathyscaphe Trieste. Meanwhile, on October 14, Felix Baumgartner, the Austrian skydiver, stepped out of a steel capsule and fell to earth from the stratosphere, topping the previous record for highest parachute jump, which was set by Air Force colonel Joe Kittinger in 1960. Bold projects like this used to be possible only through government funding. Now the adventure world is dominated by individuals and companies with deep pockets.