(Source: UNESCO - United Nations Educational, Scientific and Cultural Organization) The Swiss vote - and the more recent popular vote in the UK in favour of a Brexit - are exceptional cases, both because these two countries are beacons for international talent and because the trend worldwide is towards greater scientific mobility, rather than less. The number of international students rose by 46% between 2005 and 2013, from 2.8 million to 4.1 million, according to the UNESCO Institute for Statistics. Many governments are accompanying this movement, out of a desire to develop a knowledge economy or maintain their international competitiveness. It is no coincidence that the USA, UK and France...
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