Pollution is the single greatest threat to your life.
More than 80% of people in European cities are living in air quality below World Health Organisation standards. In 2014 PM2.5 was linked to more than 420,000 deaths in Europe - around 75% of all premature deaths. Globally PM2.5 killed more than seven million people.
Both Europe and the Netherlands, however, have halved their pollution output since the 1990s, showing that current reduction programmes are going a long way to making our cities more liveable.