A Brief History of Humankindhttps://www.coursera.org/course/humankind?from_restricted_preview=1&course_id=971211&r=https%3A%2F%2Fclass.coursera.org%2Fhumankind-002%2Fclass by michaelxia • 12 years ago 1 0 12 years agoCOcoursera.org