TWiV explains the recent meeting of the National Science Advisory Board for Biosecurity (NSABB) where stricter guidelines for research involving human, animal, and plant pathogens were considered, and how the consumption of viruses by small protists returns energy to food chains.

The TWiV hosts present two potentially seminal papers, on long-distance chemoattraction of a host by a chlorovirus, and replication of a nanovirus across multiple cells in a plant.