The AP Biology class had a talk from the manager and co-director of the Cellular Imaging Facility at the University of Arizona – Douglas Cromey. Mr. Cromey shared with the class a fascinating insight into the world of microscopy, discussing many of the technological advancements that he has witnessed, whilst working for over 40 years in this field. Students learned about new advancements in live cell imaging and the fluorescence microscopy, and Mr. Cromey also gave them a tour of one of the University’s electron microscopes, explaining how it works. It was a really fascinating talk, and the AP Biology class and Ms. Burnham are grateful to Mr. Cromey for sharing his time and passion for microscopy with us.