SciShow: Why Are Periodical Cicadas So ... Periodical?

Teacher or professor: SciShow
Subject: Science
Content of the Lesson: SciShow is supported by Brilliant.org. Go to https://Brilliant.org/SciShow to get 20% off of an annual Premium subscription. Certain cicada species in North America emerge from the ground by the millions every 13 or 17 years. But why those specific intervals? Are cicadas secretly prime-number-loving mathematicians?! Hosted by: Michael Aranda SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at http://www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Alisa Sherbow, Silas Emrys, Drew Hart. Jeffrey Mckishen, James Knight, Christoph Schwanke, Jacob, Matt Curls, Christopher R Boucher, Eric Jensen, Adam Brainard, Nazara, GrowingViolet, Ash, Sam Lutfi, Piya Shedden, KatieMarie Magnone, charles george, Alex Hackman, Chris Peters, Kevin Bealer, Jason A Saslow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://esajournals.onlinelibrary.wiley.com/doi/abs/10.1890/04-1175 https://academic.oup.com/aesa/article/104/3/443/22755 https://academic.oup.com/mbe/article/36/6/1187/5372347 https://www.pnas.org/content/110/17/6919 https://peerj.com/articles/5282/ https://esajournals.onlinelibrary.wiley.com/doi/abs/10.1890/10-1583.1 https://www.jstor.org/stable/10.1086/668596?seq=1 https://www.jstor.org/stable/2463533?seq=1 https://www.smithsonianmag.com/science-nature/what-are-cicadas-180975009/ https://www.aimsciences.org/journals/displayArticlesnew.jsp?paperID=512 Images: https://commons.wikimedia.org/wiki/File:Magicicada_septendecim_TPopp.jpg https://commons.wikimedia.org/wiki/File:Cicada_Final_Molt_and_Darkening_timelapse_14_2021-05-27.webm https://freesound.org/people/dethrok/sounds/272169/ https://www.storyblocks.com/video/stock/sb0129-a-cicada-climbs-a-tree-this-cicada-is-part-of-brood-viii-which-only-appears-in-western-pennsylvania-every-17-years-rjgvnyn6njw15ht2p https://www.storyblocks.com/video/stock/cicada-nymph-emerging-from-ground-vdzlqfd https://www.storyblocks.com/video/stock/sb0131-a-cicada-climbs-a-tree-this-cicada-is-part-of-brood-viii-which-only-appears-in-western-pennsylvania-every-17-years-sc1_ni4tvjw1adpud https://www.storyblocks.com/video/stock/cicada-nymph-climbing-tree-ffugvu6 https://www.storyblocks.com/video/stock/greengrocer-cicada-insect-cicadinae-australasiae-oxc3sbd https://www.storyblocks.com/video/stock/crow-looking-for-food-on-the-ground-rwex91emio6dwz27 https://www.storyblocks.com/video/stock/brand-new-baby-birds-resting-in-the-nest-blmadpqzfmjiyc3rzi https://www.storyblocks.com/video/stock/birds-flying-in-blue-sky-tranquil-background-nature-scene-bpl7ub5slkanm1ztg https://www.storyblocks.com/video/stock/slow-motion-footage-of-a-cute-little-squirrel-looking-for-food-on-a-rainy-day-hwmzas6xdkkv2275r https://www.istockphoto.com/vector/high-quality-realistic-trendy-no-frame-smartphone-with-blank-white-screen-mockup-gm1224237679-359894798 https://www.istockphoto.com/photo/seventeen-year-cicada-gm178592206-24921996 https://www.istockphoto.com/vector/calendar-deadline-or-event-reminder-notification-gm1195104023-340548700


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