You can be born into it, you can earn it, and you can lose it. Increasingly, you can also invest your way into it.
The "it" is citizenship of a particular country, and it is a more fluid concept than ever before. Go back 50 years, and it was uncommon for countries to allow dual citizenship, but it is now almost universal.
More than half of the world's nations now have citizenship-through-investment programmes. According to one expert, Swiss lawyer Christian Kalin, it is now a global industry worth $25bn (£20bn) a year.
Until six years ago, Hoppstädten-Weiersbach was a typical sleepy village in west Germany. Läs mer...
Så här i början av det nya året bjuder Volkswagen på en förhandstitt på sin kommande mobila laddningsstation för eldrivna fordon. Läs mer...
Three decades on, the country’s unification is still a source of sadness and trauma – which the far right know how to exploit. Läs mer...
The volume of money sent by foreign workers to their home countries reached a record-breaking $529 billion last year, and is set to become the main source of external financing for those states in 2019, the World Bank reports. Läs mer...
Det ungerska parlamentet har antagit beslutet för att skydda landets familjejordbrukare, ett beslut som bryter mot EU:s lagastiftning. Läs mer...
The Indigo Wellness Index tracks the world’s healthiest countries across ten key measures. Läs mer...
Europe may soon face a massive inflow of refugees and migrants that will be even bigger than at the peak of the infamous crisis, Läs mer...