Author, environmentalist and biochemist Pranay Lal talks to host Pavan Srinath about the curious world of viruses, their natural history, biology, and their role in maintaining human and global systems.

Lal takes listeners on a rhapsodic journey through the world of viruses and shares vivid stories of them as cosmopolitan colonisers, as regulators of global Oxygen levels, their role in the human gut, and even as the cause of one of the oldest economic bubbles in human history, Tulip Mania.