From the PBS science series NOVA, a biweekly podcast digging into the science behind the headlines. Many agree that we need a fast, accurate, and easy COVID-19 test—yet none of the commonly used diagnostic technologies have been able to meet that need. Enter CRISPR, a gene-editing tool that can also be used to identify viruses. Host Alok Patel follows the story of the two scientists who first discovered this potential for battling the coronavirus, and the biotech company that hopes to use it to revolutionize modern diagnostics.