You may have gone to bed last night in one season and woken up in another, as spring officially began at 1:48 a.m. EDT Thursday. (Yes, apparently “they” know the exact time.) We kind of feel like its about damn time the sun came out, but in fact trees are blossoming and birds are singing earlier than ever, say biologists — and that’s not ideal. Among the consequences of a climate-change-caused early spring: a longer allergy season, longer wildfire season, and disoriented flora and fauna.