Be afraid (but don't panic). On the first day of spring, the only thing I was afraid of (maybe even a little panicked) was that I didn't have enough warm clothes.  I was in Boston, mid-afternoon, and the thermometer on my dashboard registered in the low 30's—that would be Fahrenheit.   Spring?  I don't think so.  I could see my breath, even though the sun was shining.  A couple of days later, as my wife and I were walking across a college campus in Maine that our California-bred daughter was checking out before applying, it was even colder, right around 18°F with a b