to The Times Higher Education Supplement (2007 QS World University Rankings, by QS – Quacquarelli Symonds), the University of Coimbra is ranked number 3 among the universities in the Portuguese-speaking countries (behind the University of São Paulo and the University of Campinas), and ranked 318 in the overall world rank. It was ranked number one among the universities of the Portuguese-speaking countries in 2006. It is now ranked number one in Portugal, number 3 among the universities in the Portuguese-speaking countries, and number 394 in the world (234 in Natural Sciences, 260 in Engineering & IT, 282 in Social Sciences, 290 in Arts & Humanities, 325 in Life Sciences). In addition, it has students from 70 different nationalities; almost 20% of its students are foreigners, being among Portugal's most international universities. The University of Coimbra is among the major science and technology hubs for applied and fundamental research in Portugal. One of the most powerful supercomputers in Portugal belongs to the University of Coimbra and is managed by the Laboratory for Advanced Computing of the Department of Physics at the University of Coimbra. Built in the mid-2000s, the supercomputer was called Milipeia, using 528 processors and 1000 GB of memory. Its capacity has been expanded since then. The main tasks of the university's supercomputer include modeling and calculus in molecular biology, genetics, particle physics, astrophysics, mathematics, engineering, geophysics, condensed matter physics, etc. Besides University of Coimbra's researchers, other Portuguese scientific community members are allowed to work with Milipeia. The university is also notorious in Portugal for being the national university with the highest rate of academic inbreeding, with 80% of its hired faculty having obtained their doctoral degrees at the University of Coimbra, this factor is most pronounced at the Faculty of Law (100%) and the Faculty of Medicine (97%). Organisation and length of courses School year calendar starts in October and finishes in July. In 2004, it was among the first universities in Portugal limiting the time for degree completion. The degree programmes have a specified minimum and maximum time for completion. The time limit is 6 years from the date of first enrolment for the 4 years degrees, and 8 years from the date of first enrolment for 6 years degrees (i.e. Medicine). After that, students have to pay the entire costs of their courses. The tuition fee for undergraduate degrees was €356/year in 2002/2003. It was increased