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From their earliest beginnings, cities have brought both benefits and risks to the health of their inhabitants. Although some of the hazards have been banished, others remain — and new ones have emerged. By Stephanie Pain
Transporting people around the cities of the future is a public-policy challenge, but it's also an opportunity to improve the health of urban populations.
Water is a necessity for any city, but too much of it can threaten lives and infrastructure. As climate change looms, new approaches can help to turn a threat into a resource.
Future generations may have less to fear from cognitive decline thanks to microscopic insights into the ageing brain, and interventions from unexpected quarters.
Before data were so abundant, computer models of the brain were simple. Information is now much more plentiful — but some argue that models should remain uncomplicated.