Gene trees, much like family trees, trace the lineage of a particular gene from its deep ancestral roots to its still-growing branches. By comparing gene trees to species trees, which map the evolutionary history of species, scientists can learn which species have which genes, what new functions those genes gained over time, and which functions they may have lost. Now, scientists at the Okinawa Institute for Science and Technology Graduate University (OIST) have unveiled a new tool to perform these analyses quickly and without computational headaches.