The ACM Computing Reviews editorial staff joins with colleagues and friends of Alex Lopez-Ortiz (University of Waterloo, Cheriton School of Computer Science) to mourn his passing. Prof. Lopez-Ortiz ably and effectively served as our Hot Topics Editor since 2013. He brought his varied background to the task of selecting timely topics and capable authors for this essay venue.
Carol Hutchins, Editor-in-Chief, ACM Computing Reviews