The physical sciences at Cornell University jumped to No. 9 among institutions worldwide, up from No. 15 last year, according to the Times Higher Education 2015-16 World University Rankings. Cornell’s clinical, pre-clinical and health programs vaulted to 19th in the world, up from No. 30 last year.

In other subject areas, Cornell was ranked among the top 25 universities. Life sciences at Cornell was ranked No. 15 in the world, down one spot from last year; engineering and technology, 21, down from No. 17 in 2014-15; social sciences, 23, the same ranking as last year; and arts and humanities, 25, down four spots from No. 21 a year ago.

Overall Cornell was ranked No. 18 out of 800 institutions worldwide, up one spot from last year’s ranking.

Cornell ranked 13th out of 147 U.S. universities that made the list. Europe has 345 universities in the top 800. Institutions from 70 countries, 29 more than last year, feature in this year’s rankings, with countries including Indonesia, Bangladesh and Kenya being represented for the first time.

The rankings were based on the following indicators from each school, recalibrated with different weights to suit each field:

30 percent, teaching (the learning environment);

30 percent, research (volume, income and reputation);

30 percent, citations (research influence);

7.5 percent, international outlook (staff, students and research); and

2.5 percent, industry income (knowledge transfer).

See the methodology.