Beatriz Villarroel: Why we should search for alien artifacts
Is there alien life out there? After decades of hoaxes, sci-fi speculation, and government hearings, the evidence has come up short. But according to astronomer Dr. Beatriz Villarroel, it may be that we’re looking for the wrong signs. Here, she shares her team’s latest discoveries and argues that the search for alien artifacts may not be futile.