In Dallas, where temperatures dropped as low as 10 degrees last week, highs were forecast to reach the 60s on Wednesday. In New York City, where the low dropped to 17 on Wednesday, unseasonably high temperatures in the 50s were expected by Thursday. And in St. Louis, which was covered in ice Monday, a high of 50 was expected Wednesday. Forget climate change. That’s climate whiplash. It may be disorienting, but for many it is not unwelcome. Sitting in a frigid Bryant Park in New York City on Mond