New York TimesBy Justin Gillis. Educators unveiled new guidelines on Tuesday that call for sweeping changes in the way science is taught in the United States — including, for the first time, a recommendation that climate change be taught as early as middle school. The guidelines also take a firm stand that children must learn about evolution, the central organizing idea in the biological sciences for more than a century, but one that still provokes a backlash among some religious conservatives. The guidelines, known as the Next Generation Science Standards, are the first broad national recommendations for science instruction since 1996. Read more...