diana gonzalez gives a closer look. >> anna has been working on flying kites for a cure center mother lily died of lung cancer in 2008. >> she was a nonsmoker and nobody in my household smoked. for us, it was a left field diagnosis. we did not understand how she got it. she hated it if people ask for if she smoked because she did not think anybody deserved it. >> looking at lung cancer deaths among nonsmokers, in 2008, 7001 man, 20,000 were women. one in five women diagnosed with lung cancer never smoked. >> a lot of research is going into it but to be honest we have not yet been able to put our hands exactly on what is causing it. >> the university of miami just started a long screening program using low dose ct scans in an effort to find lung cancer earlier. when it is more curable. while smokers are at highest risk -- >> if you were in a home where your parents work or worked where there was smoking on the job or a spouse, those people should consider being screened. >> the goal is to detect cancer before there are symptoms. lee's were very subtle. >> just a very little cough, very