Space-Age Sanitation Guest: Brendan Niemira, Research Leader, Agricultural Research Service, US Department of Agriculture Cold plasma is an alternative method of sanitation that is effective in killing both bacteria and viruses, and it can be used safely on food. Copper: An Ancient Antimicrobial Guest: Michael Schmidt, Professor, Microbiology and Immunology, Medical University of South Carolina Could copper’s bacteria- and virus-killing superpower make hospitals a safer, cleaner place for patients? The ancients knew all about its germ-busting capabiities. Listen to more of Michael Schmidt here