A lot of us would like to get off the grid, and get our power from the sun. But for most of us, it�??s just too expensive. In this edition of SmallTalk, we�??ll hear from Dr. Jeff Grossman at the University of California at Berkeley, who explains how nanotechnology may be used to make solar panels cheaper. And what could be wrong with that? Some ethical dilemmas crop up when we try to improve our lives through nanotechnology, and we�??ll hear from philosopher Patrick Lin of the Nanoethics Group about those issues.