- Cities Find Rewards in Cheap Technologies
Mobile apps, sensors, and other technologies help cities handle growing challenges.
Cities around the globe, whether rich or poor, are in the midst of a technology experiment. Urban planners are pulling data from inexpensive sensors mounted on traffic lights and park benches, and from mobile apps on citizens’ smartphones, to analyze how their cities really operate. They hope the data will reveal how to run their cities better and improve urban life. City leaders and technology experts say that managing the growing challenges of cities well and affordably will be close to impossible without smart technology.
Fifty-four percent of humanity lives in urban centers, and almost all of the world’s projected population growth over the next three decades will take place in cities, including many very poor cities. Because of their density and often strained infrastructure, cities have an outsize impact on the environment, consuming two-thirds of the globe’s energy and contributing 70 percent of its greenhouse-gas emissions. Urban water systems are leaky. Pollution levels are often extreme. - Nanoparticle Detects the Deadliest Cancer Cells in Blood
A novel kind of nanoparticle could lead to more effective cancer treatments.
Patients and doctors often don’t know if surgery to remove cancerous tissue was successful until scans are performed months later. A new kind of nanoparticle could show patients if they’re in the clear much earlier.
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