Recently, 40+ bird genomes were sequenced, and we are still just beginning to sift through the data. How did birds lose their teeth? (Yes, teeth.) How did they evolve to learn complex songs? Has flying made their genomes smaller? Get the scoop from Allison Schultz.
What makes a polar bear a polar bear? Allison Shultz explains that the difference between polar bears and their cousins, the brown bears, is more than skin deep.
Phil Grayson explains how improvements in mitochondrial and nuclear genomics have rewritten what seemed like an open-and-shut case in the evolution of flightless birds.