In recent years, global migration has transformed in terms of its numbers and reach, its political significance, and its impact. The rising rates of international migration have been matched by growing public and media interest around the world. Today, the political and media attention on migration and greater public interest and concern feed into an international debate that is all too often poorly informed and one-sided.This Very Short Introduction looks at the phenomenon of international human migration - both legal and illegal - and offers an objective stance on the topic, and its benefits and challenges. Khalid Koser reveals the opportunities migration presents that must be taken advantage of in the current economic climate, and debunks common myths to demonstrate that society, as we now know it, cannot function without migrants.Using interviews with migrants from around the world, Koser presents the human side of issues such as asylum, human trafficking, migrant smuggling, and th