Ian Cull is the President of Indoor Sciences, a Chicago-based training and consulting company. Mr. Cull has served as Board Member and Technical Director of the Indoor Air Quality Association (IAQA). He has been an expert witness on several federal court cases related to indoor air quality and mold. He is the author of over 50 classes on indoor air quality and has trained thousands of people since first starting in the field in 1995. Mr. Cull is a licensed professional engineer and certified industrial hygienist (CIH). He has a degree in Environmental Engineering from the University of Illinois- Champaign Urbana.