Human mobility plays an important role in the shaping of the world's urban centers. These four infographics, prepared by the Overseas Development Institute (ODI), highlight urban human mobility trends, focusing on Africa and Europe.
Cities are on the sharp end of a range of risks from criminal violence, terrorism and war to demographic pressures, to climate and environmental change. Coastal megacities are especially at risk given the specific impacts of climate change they face, including accelerated global sea-level rise, increased storm frequency and severity, and destruction to critical infrastructure such as port facilities, rail and road linkages, and energy installations, all of which are amplified as urban populations become ever larger.