How these courses are ranked
48 of these universities hold a QS World position, from #5 (Harvard University) to #575 (University of South Carolina); they are listed first, in that order. The rest are ordered by research impact. Harvard University has the largest research record in this group, with 146,463,495 citations and an h-index of 2,807. 20 universities have neither a QS position nor a research record yet and appear at the end, marked "Not yet ranked".
What the courses look like
Within the subject, the largest areas are Science (1,610), Chemistry (29), Mathematics (17) and Geology (14). The usual length is 4 years and 2 years. 99% are full-time and 21 can be studied online. Start dates lean to Fall (100% of courses with a stated intake) and Spring (100% of courses with a stated intake). Humboldt State University offers the widest choice, with 30 of these courses.