According to the World Health Organisation (WHO), only 12% of the people living in cities breathe fresh air. Many urban dwellers are exposed to air pollution above WHO recommendations making them vulnerable to long term health problems. Today's megapolis have skyscrapers representing concentrations of monetary wealth often at the expense of the environment. Air pollution is getting worse in many regions due to increasing reliance on fossil fuels. In Hong Kong, air pollution is getting worse, driving many expats away from the region. In Seoul, the megacity is choking under intense smog. Singapore's air quality isn't fairing much better. Despite the apparent prosperity of megacities, the environmental cost of heavy industrialisation and urbanisation far outweighs the benefits of convenience. Increasing air traffic exacerbates the problem across the globe. The rising demand for goods and services is disrupting Earth's natural ecosystem. Transportation systems of major cities (Silicon Valley for example) are constantly overwhelmed with traffic and are expensive to maintain. Rising production of goods consequently lead to higher consumption with most products ending up incinerated or in land fills. Recycling is often seen as expensive option as it is labour intensive. Perhaps it is time to learn from the Amish people.