Copenhagen has an urban population of 1.2 million, and is the most densely populated area in Northern Europe. It is recognized globally as a city providing one of the highest standards of living, and is also known as one of the most environmentally friendly cities. Copenhagen is a major regional centre of culture, business, media, and science. Life science, information and shipping are important sectors, along with research and development, all of which play a major role in the city's economy. Its strategic location and excellent infrastructure, have made Copenhagen an important regional hub, and a popular location for company headquarters.