Snow threatens Colorado mightily this midwinter. We're supposed to have a wet couple of months, as today will testify. It's a blessing that there's so much moisture pouring into the earth, but it also means that both mine and my sister's jobs often call snow days. For me, well, I have the ability to work from home so I'm expected to do that on snow days, for at least part of the day. But Caitlin's...