2020 Ig® Informal Lecture: THE ACOUSTICS PRIZE "Alligators Bellowing in Heliox" The Ig Nobel Prizes honor achievements that make people LAUGH, then THINK. In the Ig Informal Lectures, some days after the ceremony, the new Ig Nobel Prize winners attempt to explain what they did, and why they did it. (Traditionally, the lectures happen at the Massachusetts Institute of Technology (MIT), but in the pandemic year 2020 they happened in video form only.] The 2020 Ig Nobel Prize for Acoustics was awarded to Stephan Reber, Takeshi Nishimura, Judith Janisch, Mark Robertson, and Tecumseh Fitch, for inducing a female Chinese alligator to bellow in an airtight chamber filled with helium-enriched air. They documented that research, in the study “A Chinese Alligator in Heliox: Formant Frequencies in a Crocodilian,” Stephan A. Reber, Takeshi Nishimura, Judith Janisch, Mark Robertson, and W. Tecumseh Fitch, Journal of Experimental Biology, vol. 218, 2015, pp. 2442-2447. [LINK TO THAT STUDY: https://jeb.biologists.org/content/21...] Full details at: www.improbable.com www.improbable.com/ig-about/winners/ www.improbable.com/ig-about/the-30th-first-annual-ig-nobel-prize-ceremony/