Liquid chalk proven in CU labs to kill coronavirus, potentially helping gyms to safely reopen

The COVID-19 pandemic had Ross Kedl literally climbing the walls. In his home, the immunology professor has a rock wall in the basement that beckons whenever he and his son can’t get to the gym or favorite outdoor spots. So when an opportunity arrived in Kedl’s email inbox to help a Colorado company in its efforts to reopen thousands of now-closed climbing gyms, he grabbed hold of the project.