1. C. Kirabo Jackson finds that college-prep programs -- with payments -- really do work for inner-city students.
2. The Stanford Technology Law Review digs deep into Intellectual Ventures' role as "mass aggregator" of patents; Business Insider's writeup: "It's an ugly business. But it's also perfectly legal."
3. A 3D printer that makes bowls and ceramics out of sand.
4. British medical students turn to prostitution.