Featured image for NLM’s Musings series, “From Our Researchers.” On the right is a headshot of Dr. Eugene Koonin, a white man with very short brown and gray hair wearing a blue, purple, and white striped button-down shirt. Behind him is a blue background with superimposed illustrations of his area of expertise, including a model for the origin of eukaryotic cells and their viruses. On the bottom left is a blue banner with white outline and “From Our Researchers” in white text.