Learn about what the “frenemy effect” can teach us about bullying; the surprising ability of marmosets to eavesdrop on each others’ conversations; and why April Fool’s Day may have originated from an out-of-date calendar.

The "frenemy effect" says bullying happens most between friends by Kelsey Donk

• Most Teen Bullying Occurs Among Peers Climbing the Social Ladder. (2021, February 17). UC Davis. https://www.ucdavis.edu/news/most-teen-bullying-occurs-among-peers-climbing-social-ladder
• With Friends Like These: Aggression from Amity and Equivalence | American Journal of Sociology: Vol 126, No 3. (2012). American Journal of Sociology. https://www.journals.uchicago.edu/doi/10.1086/712972#_i8

Marmosets eavesdrop on each other's conversations — and understand what's said by Steffie Drucker

• Eavesdropping marmosets understood other monkeys’ conversations - and they judged. (2021). EurekAlert! emu020121.php">https://www.eurekalert.org/pub_releases/2021-02/aaft-emu020121.php
• Marmoset monkeys eavesdrop and understand conversations between other marmosets. (2021). EurekAlert! mme020321.php">https://www.eurekalert.org/pub_releases/2021-02/uoz-mme020321.php
• Brügger, R. K., Willems, E. P., & Burkart, J. M. (2021). Do marmosets understand others’ conversations? A thermography approach. Science Advances, 7(6), eabc8790. https://doi.org/10.1126/sciadv.abc8790

April Fools' Day May Have Originated From an Out-of-Date Calendar by Reuben Westmaas

• Winick, S. (2016, March 28). April Fools: The Roots of an International Tradition | Folklife Today. Loc.gov. https://blogs.loc.gov/folklife/2016/03/april-fools/
• Wills, M. (2016). Why New Years Falls on January 1st | JSTOR Daily. JSTOR Daily. https://daily.jstor.org/new-year-january-1st/
• Britanniae, B. (2014, April). Origins of April Fools Day. Latin Language Blog | Language and Culture of the Ancient Latin-Speaking World. https://blogs.transparent.com/latin/origins-of-april-fools-day/

Podcasts referenced in this episode:

• Introduction: https://tim.blog/podcast/
• First story: https://songexploder.net/
• Second story: https://www.alieward.com/ologies
• Third story: http://www.wtfpod.com/
• Recap segment: https://serialpodcast.org/
• Special thanks to the HiHo team for their assistance: https://hiho.link/c/curiosity

Subscribe to Curiosity Daily to learn something new every day with Cody Gough and Ashley Hamer. You can also listen to our podcast as part of your Alexa Flash Briefing; Amazon smart speakers users, click/tap “enable” here: https://www.amazon.com/Curiosity-com-Curiosity-Daily-from/dp/B07CP17DJY

Find episode transcript here: daily-4e53644e.simplecast.com/episodes/why-april-fools-day-exists">https://curiosity-daily-4e53644e.simplecast.com/episodes/why-april-fools-day-exists