Yale University now offers seven online courses, available to everyone without charge. The opencourseware classes offer no credit or grades, but they're a fun way to give online learning a try. Here's how Yale describes their new offerings:

"Open Yale Courses provides free and open access to seven introductory courses taught by distinguished teachers and scholars at Yale University. The aim of the project is to expand access to educational materials for all who wish to learn.

Open Yale Courses reflects the values of a liberal arts education. Yale's philosophy of teaching and learning begins with the aim of training a broadly based, highly disciplined intellect without specifying in advance how that intellect will be used."

Interested? Enroll in a free online course from any of the following departments: Astronomy, English, Philosophy, Physics, Political Science, Psychology, or Religious Studies.