Summary #1042

Moth fuzz is actually an acoustic camouflage against bat echolocation
  • Moth fuzz, the curious powder on moths, turns out to be acoustic protection against bat echolocation.
  • The fuzz is actually comprised of hair-like scales, and they have a layout with structures and patterns almost identical to materials used in sound insulation.
  • It was compared to similar fuzz on butterflies, which didn’t absorb ultrasonic sound energy, whereas moth fuzz absorbed ~68% of this energy
  • Researchers show that it’s a broadband (20-160khz) stealth coating, which camouflages moths from bats, giving them a survival advantage.
  • The scales are considerably better at absorbing sound than human-made absorbers with the same structural parameters.


  • Science Science (63) Effectiveness of Surgical and Cotton Masks in Blocking SARS–CoV-2: A Controlled Comparison in 4 Patients
  • Psychology Psychology (67) The Desire for Information: Blissful Ignorance or Painful Truth?
  • Cosmos Cosmos (30) Huge explosion, second only to the Big Bang, discovered 390 million light years from Earth
  • History History (16) Three human-like species lived side-by-side in ancient Africa
  • Society Society (69) AI can’t predict how a child’s life will turn out even with a ton of data
  • Medicine Medicine (67) Air pollution linked to dementia and cardiovascular disease
  • Technology Technology (73) First-principles calculations shed light on semiconductor defects
  • Nature Nature (49) If the planet keeps on heating, more people will suffer from heat stress



Fame 🙌 - Articles for science lovers shortened to five bullet points. | Product Hunt Embed

We were featured on Hacker News, O'REILLY® Ideas, and Boing Boing.