Time Magazine: The climatological finding isn’t new. For years now, scientists around the world have recognized that global warming affects the seasons, triggering springtime events like the flowering of plants as much as six weeks earlier than normal, and pushing the arrival of fall ever further back in the calendar. Lengthening summers have translated not just to more days of warm temperatures but more drought and wildfires as well. (See pictures of the effects of climate change on Europe.) What’s …