Spray, Fog or Clean

— By Robert Kravitz — Exploring three cleaning technologies that have taken center stage since the pandemic began.   An entire floor of a high-rise office building in Chicago is rented out to a global, “virtual” office company. Most of…

Pathogen Problem

— By Robert Kravitz — What if electric hand dryers sometimes do more harm than good?   The men’s room in a Chicago restaurant included a sign many of us have seen before in other restaurants, movie theaters and similar…