This week: New research on the first known interstellar object in our solar system, A/2017 U1—or Oumuamua—suggesting it’s probably a chunk of a Pluto-like planet, and not from aliens; research that used 2,000 microphones to get super detailed recordings of hummingbirds and learn how they make the sounds they make; the impact of alcohol consumption policies at major league baseball stadiums; and new research on people with aphantasia—the inability to form mental imagery—and how scary stories are less likely to scare them.

Support the show: https://www.patreon.com/inquiringminds