A Chinese entrepreneur thinks he has just the solution for smog-choked residents of China's largest cities: canned air infused with flavors such as "pristine Tibet," "post-industrial Taiwan" and "revolutionary Yan'an." Chen Guangbiao says his true aim is to draw attention to China's persistent air pollution problems. "If we don't start caring for the environment, then after 20 or 30 years, our children and grandchildren might be wearing gas masks and carry oxygen tanks," he said.

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