We all know what happens when it gets cold in Colorado - people put on heavy jackets, the roads and sidewalks can get slippery, the ski resorts are happy, etc...   But what happens when things get really cold, like -300 degrees cold?  Join us as Dr. Charles Kuehn from the University of Northern Colorado Department of Physics and Astronomy shows us what happens when you use liquid nitrogen to get things really cold.  Watch roses shatter, balloons deflate, ceramic disks levitate, and more cool, well cold demos.  Learn some fun science, enjoy delicious beer, and play trivia for prizes.