by Merry Youle — Roseo­var­ius nu­bin­hibens re­cently joined the ex­clu­sive club of about a thou­sand bac­te­ria whose genomes have been se­quenced. Why this honor? It's a mem­ber of one of the most ubiq­ui­tous and most in­tensely stud­ied clades of α‑Proteobacteria, the ma­rine roseobac­ters. This pop­u­lous group...