Since we last spoke, researchers at the University of Birmingham have defined the precise shape of a single photon (spoiler: roundish). Economists worry that Trump's grandiose deportation plans could lead to a recession. And astronomers report that the Milky Way may not be truly representative of other galaxies in the universe. We also reported on supercharged human metabolism, projections of sea level rise over the next 75 years and a remarkable photo of a dying star in another galaxy: