Fall descended on Durham recently like someone turned a key and announced, “New season, step up now, no dallying!” It had been summer-hot and sticky per usual through most all August and the first three weeks of September. Then came the autumn equinox on the 22nd with a full day of intermittent rain, and early the next morning, upon opening the door to the sun porch, “Whoa! Where’s my sweatshirt?” Sure, days are still getting up in the mid-to-upper 80s with that nice penetrating fall warmth that somehow never feels hot, but the heat and especially the humidity have begun leaching from…