dr. crystal dilworth and cara santa maria. now today we're going to start out talking about science and religion. now to be blunt, these aren't two things that often see eye to eye. >> true on the surface they very much seem opposed to each other and i was a scientist trained to take nothing on faith and to only look at the data. >> and that's what's so cool about this study. crystal and i had the chance to go to university of utah where researchers are trying to determine whether feeling the spirit can be measured scientifically. >> we even got the chance to participate in the study and the results were interesting. let's take a look. >> i baptize you in the name of the father and of the son and of the holy spirit. >> religious faith... of the seven billion people on the planet, it's estimated that 84-percent are members of one of hundreds of religions. despite the different gods, philosophies and rituals, most religions share a promise for a physical sense of spirituality. >> in our faith we do believe that you have the spir

dr. crystal dilworth. now bigger and potentially more dangerous, that's the best way to describe what's happening the smoking alternative known as e-cigarettes, or vaping. >> it's an industry that seems to really be exploding i mean you're seeing it everywhere. and a part of me wonders if this might be because of some misinformation about vaping, that's my sense. >> and our dr. crystal dilworth, you have your phd in nicotine studies so we've asked you to keep a tab on this. there's a lot academic research that's being done on the safety of use of these devices, but it can't really keep up with a growing industry. >> i enjoy the taste of it and not get the harmful effects of what smoking does. >> call them vapers, or foggers or competitive cloud chasers... all are welcome at crystal vapor, one of thousands of vape shops across the country. since techknow first reported on the "vaping" phenomenon in 2013, the industry has taken off like wild fire. revenue is estimated to reach 3.5 billion dollars this year,