The full list of 2021 Ig Nobel award winners:
Biology Prize: Susanne Schötz, for analysing variations in purring, chirping, chattering, trilling, tweedling, murmuring, meowing, moaning, squeaking, hissing, yowling, howling, growling, and other modes of cat-human communication.
Ecology Prize: Leila Satari and colleagues, for using genetic analysis to identify the different species of bacteria that reside in wads of discarded chewing gum stuck on pavements in various countries.
Chemistry Prize: Jörg Wicker and colleagues, for chemically analysing the air inside movie theatres, to test whether the odours produced by an audience reliably indicate the levels of violence, sex, antisocial behaviour, drug use, and bad language in the movie the audience is watching.
Economics Prize: Pavlo Blavatskyy, for discovering that the obesity of a country's politicians may be a good indicator of that country's corruption.
Medicine Prize: Olcay Cem Bulut and colleagues, for demonstrating that sexual orgasms can be as effective as decongestant medicines at improving nasal breathing.
Peace Prize: Ethan Beseris and colleagues, for testing the hypothesis that humans evolved beards to protect themselves from punches to the face.
Physics Prize: Alessandro Corbetta and colleagues, for conducting experiments to learn why pedestrians do not constantly collide with other pedestrians.
Kinetics Prize: Hisashi Murakami and colleagues, for conducting experiments to learn why pedestrians do sometimes collide with other pedestrians.
Entomology Prize: John Mulrennan Jr and colleagues, for their research study "A New Method of Cockroach Control on Submarines".
Transportation Prize: Robin Radcliffe and colleagues, for determining by experiment whether it is safer to transport an airborne rhinoceros upside down.
https://www.bbc.co.uk/news/science-environment-58507100
Biology Prize: Susanne Schötz, for analysing variations in purring, chirping, chattering, trilling, tweedling, murmuring, meowing, moaning, squeaking, hissing, yowling, howling, growling, and other modes of cat-human communication.
Ecology Prize: Leila Satari and colleagues, for using genetic analysis to identify the different species of bacteria that reside in wads of discarded chewing gum stuck on pavements in various countries.
Chemistry Prize: Jörg Wicker and colleagues, for chemically analysing the air inside movie theatres, to test whether the odours produced by an audience reliably indicate the levels of violence, sex, antisocial behaviour, drug use, and bad language in the movie the audience is watching.
Economics Prize: Pavlo Blavatskyy, for discovering that the obesity of a country's politicians may be a good indicator of that country's corruption.
Medicine Prize: Olcay Cem Bulut and colleagues, for demonstrating that sexual orgasms can be as effective as decongestant medicines at improving nasal breathing.
Peace Prize: Ethan Beseris and colleagues, for testing the hypothesis that humans evolved beards to protect themselves from punches to the face.
Physics Prize: Alessandro Corbetta and colleagues, for conducting experiments to learn why pedestrians do not constantly collide with other pedestrians.
Kinetics Prize: Hisashi Murakami and colleagues, for conducting experiments to learn why pedestrians do sometimes collide with other pedestrians.
Entomology Prize: John Mulrennan Jr and colleagues, for their research study "A New Method of Cockroach Control on Submarines".
Transportation Prize: Robin Radcliffe and colleagues, for determining by experiment whether it is safer to transport an airborne rhinoceros upside down.
https://www.bbc.co.uk/news/science-environment-58507100