<a href="http://www.nytimes.com/2015/04/16/business/experimenting-at-home-with-air-quality-monitors.html?partner=rssnyt&amp;emc=rss"><img src="http://static01.nyt.com/images/2015/04/16/business/16green/16green-thumbStandard.jpg" border="0" height="75" width="75" hspace="4" align="left" /></a>More people are tinkering with personal devices to measure pollution, but experts caution that the technology is not always reliable or user-friendly.<div><a href="http://www.nytimes.com/2015/04/16/business/experimenting-at-home-with-air-quality-monitors.html?partner=rssnyt&amp;emc=rss" target="_blank">Original link</a></div><div>Original author: KATE</div>