"Grant Majors, and Alista Yang, both second-graders at Rocky Mountain Elementary in Westminster, learn why the sky is blue by looking in this tube at the NCAR Visitors Center on Thursday.<br /> NCAR (National Center for Atmospheric Research), located in Boulder, will celebrate 50 years of existence this summer.<br /> For more photos and a video, go to  <a href=""http://www.dailycamera.com"">http://www.dailycamera.com</a>.<br /> Cliff Grassmick/ January 21, 2010."
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