I try to push questions like, "how many people have sat here before me today?" and "how many germs have been spread onto this bar that I'm holding?" out of my mind.
I guess we can feel some sense of relief in the fact that a new study shows that the air we breathe down in the subway is just as bacteria-filled as the air we breathe on the street above it. Of course, the second you leave NYC, you remember what fresh air really tastes like. So the question still remains, what is really in the air?
NY Times Article: http://www.nytimes.com/2013/05/28/science/microbes-hitch-a-ride-on-the-subway.html?partner=socialflow&smid=tw-nytmetro&_r=0
Image Source: http://www.nytimes.com/imagepages/2013/05/28/science/28UNDE.html