Effective policies to fight Covid-19 require policymakers abide by the advice offered by qualified scientists using valid scientific data. Georgia Governor Brian Kemp, for example, put Georgians at risk by ignoring experts advising that the virus could spread by those infected but not showing symptoms of Covid-191. The price for Governor Kemp’s ignorance was paid...

Viruses are simple things- they consist of a string of DNA or RNA wrapped in protein. Yet they have no machinery to make proteins, not even their own. How can they be so pathogenic, giving rise to diseases ranging from polio to influenza and now, to the devastating new pandemic, Covid-19? Pathogenic viruses, including SARS-CoV-2...