By Page Grossman
Posted 08.28.2012 at 3:21 pm 12 Comments
Since 2009, Utah has used computers to grade essays on a state student-assessment test. And testing companies use essay-evaluating software as one of two graders on graduate-school admissions exams such as the GRE. But how well, really, can a computer grade an essay?
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.