William Denton<p>My employer (a university) wants to the raise the acceptable CO₂ air quality level (in classrooms, offices, libraries, etc.) from 1,000 ppm to 5,000 ppm. And there I was, just a couple of weeks ago, wondering why our Wellness Wednesday emails stopped.</p><p><a href="https://cosocial.ca/tags/YorkUniversity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>YorkUniversity</span></a> <a href="https://cosocial.ca/tags/Covid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Covid</span></a></p>