Lecturers and teachers could soon have an automated ally in the classroom. An intelligent tutoring system developed at the University of California, San Diego, can analyse facial cues, expressions and head movements to gauge how difficult students are finding a lecture. The system gets it right less than half the time at the moment, but could eventually help create video lectures that run at a student’s own pace.
A new way to fight obesity could soon overcome the need for invasive surgical interventions like gastric banding. In early trials overseen by the Mayo Clinic in Rochester, Minnesota, a small, implantable…
