Thanks to Will for this one:
In this lecture, engineer and cave explorer Bill Stone discusses some of the technology used in the mapping of deep under water caves and its use in the future of space exploration. Stone examines 3D mapping technology of completely autonomous probes and examines how this could impact the exploration of Jupiter's moon Europa. In concluding his talk, Stone explores the possibility of mining the moon for space fuel. This project would make the industry much more economical and revolutionize space travel.