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Nowadays the human economic activities such as extraction, production, consumption and discard have reached enormous scales to meet the needs of the present. As a consequence, the quality of the ecosystem services declines rapidly bringing up the issue of sustainability.

In 2012, the WHO estimated that 3 million people died prematurely from ambient air pollution. Today that figure has risen to 4.6 million. By inhaling invisible particles called PM10 and PM2.5 people unknowingly get these fine particulates lodged in their lungs. This affects everyone, but in particular, the aged, the ailing and the young.

If I were to ask you which category Sweden is currently leading the European Union in, would you be able to answer? The unlikely hero is the European Bloc's largest consumer of renewable energy according to Eurostat, with the country sourcing close to 53.9% of its power from renewable means in 2016.

The invention of steam power engine in the turn of 19th century sparked mass industrialisation, the rapid growth of cities and development of railway grids that connected them.

How do we go about educating and motivating individuals, specifically within an urban environment, to become responsible citizens, willing to be held accountable for their part in contributing to a cleaner, greener planet? Education for all ages is needed so that cities can grow into sustainable systems which will provide clean water for all, safe housing, schooling, healthcare, affordable, healthy food and open green spaces for relaxation and recreation.