This Week in History By Cherie Preville May 5, 2001 1937 The Cincinnati Zoo opens its first air conditioned and humidified snake house.1953 Health benefits of a/c touted.1996 Survey looks at future of natural gas cooling. Share This Story Cherie Preville is Education and Products Editor. She can be contacted at 248-244-6496 or cheriepreville@achrnews.com. Recent Comments Very good... Commercial ITC & the Limited-use property Doc allowing 3rd party leasing of commercial geo systems Energy Star and trust HVACR TECHNICIAN Opp Blog Roll Editors Blog Guest Blog Opinions