There are all kinds of apps that rate the air quality in your home and outside. But one young programmer has created one on his own, that has taken off in his native Macedonia and is expanding worldwide
Seasonal rains are bringing relief from a toxic haze that had blanketed Malaysia and Singapore. The air pollution disrupted the lives of millions of people and concerns remain about whether the problem will keep happening. Dave Grunebaum has the story from Kuala Lumpur, Malaysia