Engineering the megacity

This report focuses on how to solve some of the big engineering challenges we face as the world´s cities multiply, grow, and mature, particularly as they are being played out in the largest and most complicated urban habitats human beings have ever lived in: megacities. Not all of the challenges of urban life have a technological solution, of course. But we found five cities $Shanghai, Sao Paulo, Mumbai, Tokyo, and New York - that have come up with particularly innovative solutions to some of the biggest problems cities face: pollution, transportation, energy, natural disaster, and crime.