In this week's edition of 'North By Southwest', Nicolas Jackson visits a higher education fair in Madrid and discovers the phenomenon of academic migration, where students opt to study for a degree in a foreign country. 24 UK universities set out their stall to attract Spanish students investigating the possibility of studying abroad. Academic migration is not new, but students, teachers and university representatives in Spain all agree that it is on the increase, in an economic climate where employment for graduates can no longer be taken for granted.