Managing megacities

The Emergence of Megacities

human history. The first cities were built on the plains of Mesopotamia near the Tigris and Euphrates rivers between the years 4000 and 3000 BC. The first city to reach a population of one million was Rome, in about 5 BC. Not until about 1800 AD had another city, London, reached the one million mark. Urban populations grew rapidly throughout the 19th century, fueled more by migration from rural...

The next age of megacities

Megacities and climate change - A brief overview.

Cities have developed into the hotspots of human economic activity. From the appearance of the first cities in the Neolithic to 21st century metropolis their impact on the environment has always been apparent. With more people living in cities than in rural environments now it becomes crucial to understand these environmental impacts. With the immergence of megacities in the 20th century and th...

Challenges Faced by Megacities in the Future

The advancement of science, industry, and digital technologies has shaped the lives of many people and has encouraged more people to live in cities. Since 2007, the urban population has exceeded the rural, and this amount is estimated to increase up to 60% of world habitants by 2030, according to the United Nations. Considering that these changes in people’s lifestyle can create various challen...

Energy and material flows of megacities.

Understanding the drivers of energy and material flows of cities is important for addressing global environmental challenges. Accessing, sharing, and managing energy and material resources is particularly critical for megacities, which face enormous social stresses because of their sheer size and complexity. Here we quantify the energy and material flows through the world's 27 megacities with p...