Problems that cities are facing With the increasing urbanization, people move massively to cities in search of better lives. According to a survey from the UN, today, more than 50% of the world's population are living in cities. As a consequence, many problems are facing cities such as overcrowding, heavy traffic, air pollution, skyhigh housing price and living costs and so on. For example, Guangzhou, the city I live in, has terrible traffic during rush hours. Despite the efforts of the government to improve public transport, people there constantly find themselves stuck in traffic. In addition to that, the air quality is deteriorating significantly during the past decade because of the car exhaust fumes. Not to mention the rocketing housing price which is literally 5 times higher than 10 years ago as a result of overpopulation which increases the housing demand dramatically. Living in cities does offer us better lives, however, our cities are facing severe challenges which require efforts from each of us in order to tackle. Pherhaps changing our lifestyles could help. For instance, we could cycle to work instead of driving private cars. Sorry, I have no idea how to continue writing this essay, please give me Some tips and check my errors. Thanks in advance.