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As many of you know, I am working with my colleagues at the City Colleges of Chicago and DePaul University on some high altitude balloon (HAB) launches.  This activity has been funded by NASA, and we really excited to to do some launches, and share our findings.  The STEM Academy is a great resource as we build our experiments.  Today's post, however, is about launching and retrieving a balloon.   We live in Chicago, which has two airports, lots of people, buildings, and a h ...