From wasps nests to nuclear reactors. Here are just a few clever ways archeologists figure out how old something is. Hosted by: Olivia Gordon SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Kevin Bealer, Jacob, Katie Marie Magnone, D.A. Noe, Charles Southerland, Eric Jensen, Christopher R Boucher, Alex Hackman, Matt Curls, Adam Brainard, Jeffrey McKishen, Scott Satovsky Jr, James Knight, Sam Buck, Chris Peters, Kevin Carpentier, Patrick D. Ashmore, Piya Shedden, Sam Lutfi, Charles George, Christoph Schwanke, Greg ---------- Looking for SciShow elsewhere on the internet? Facebook: www.facebook.com/scishow Twitter: www.twitter.com/scishow Tumblr: scishow.tumblr.com Instagram: instagram.com/thescishow ---------- Sources: www.acs.org/content/acs/en/education/whatischemistry/landmarks/radiocarbon-dating.html www.nbcnews.com/id/23940463/ns/technology_and_science-science/t/experts-use-poop-date-first-north-americans/ geoinfo.nmt.edu/labs/argon/methods/home.html www.geo.arizona.edu/~reiners/geos474-574/Kelley2002.pdf www.discovermagazine.com/the-sciences/everything-worth-knowing-about-scientific-dating-methods www.thoughtco.com/luminescence-dating-cosmic-method-171538 citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.539.9367&rep=rep1&type=pdf www.brown.edu/Departments/Joukowsky_Institute/courses/greekpast/4929.html science.jrank.org/pages/1952/Dating-Techniques-Thermoluminescence-dating.html www.thecanadianencyclopedia.ca/en/article/dating-in-archaeology www.dri.edu/luminescence-lab/luminescence-applications in-africa.org/wp-content/uploads/2012/12/Grun-R-Stringer-1991-Archaeometry-ESR_AMH-origins.pdf journals.openedition.org/quaternaire/8003 www.spectroscopyeurope.com/component/content/article/3328-dating-fossil-teeth-by-electron-paramagnetic-resonance-how-is-that-possible www.britannica.com/science/electron-paramagnetic-resonance www.futurelearn.com/courses/human-fossils/0/steps/49022 www.nature.com/scitable/knowledge/library/dating-rocks-and-fossils-using-geologic-methods-107924044/ www.bbc.com/news/science-environment-51378317 advances.sciencemag.org/content/6/6/eaay3922 www.deerfield.k12.wi.us/faculty/petersenr/SERlATlON%20Project.pdf www.thoughtco.com/seriation-scientific-dating-before-radiocarbon-170607 core.ac.uk/download/pdf/5105337.pdf www.greerservices.com/Assets/publications_pdfs/2001SAA_SeriationRA/SAA%202001%20SeriationRAmg.pdf edu.rsc.org/resources/defining-the-age-of-a-rock-or-cave-painting/1558.article image sources: www.usgs.gov/media/images/carbon-dating-cartoon commons.wikimedia.org/wiki/File:Claudius_Pio-Clementino_Inv243.jpg commons.wikimedia.org/wiki/File:Arringatore.jpg#/media/File:Arringatore.jpg www.dent-wiki.com/dental_technology/formation-of-enamel-amelogenesis/ commons.wikimedia.org/wiki/File:Bradshaw_rock_paintings.jpg#/media/File:Bradshaw_rock_paintings.jpg commons.wikimedia.org/wiki/File:Thorium_decay_chain_from_lead-212_to_lead-208.svg

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