Does your water lose something on the bedstand overnight?

Is is safe to sip from the glass out overnight?  How about the bottle in the car?  The pitcher on the porch?  I mean, it's only water, right?  Well, turns out that there are a variety of factors that could spoil that special sip, and here is a little article from the Reader's Digest website where I was asked to expound on the topic.  Have a look, then take a drink!

Is It Bad to Drink Water that’s Been Sitting Overnight—or Longer?