Meeting the data challenges of urban computing

Many people living in the People's Republic of China and Hong Kong have a new habit: they check the air pollution index before venturing outside. Air quality has deteriorated rapidly in China, with nitrogen dioxide and particulate ...

Urban grime releases air pollutant when exposed to sunlight

In a first-of-its-kind study, researchers have determined that natural sunlight triggers the release of smog-forming nitrogen oxide compounds from the grime that typically coats buildings, statues and other outdoor surfaces ...

Turning smartphones into personal, real-time pollution monitors

As urban residents know, air quality is a big deal. When local pollution levels go up, the associated health risks also increase, especially for children and seniors. But air pollution varies widely over the course of a day ...

Japan venture to bring electric tuk-tuks to Asia

A Japanese company is hoping to win a big slice of Asia's tuk-tuk market, it said Wednesday, betting battery-operated buggies could cut burgeoning city pollution.

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