4 Ways to Date an Archaeological Site

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 http://www.scishowtangents.org
----------
Support SciShow by becoming a patron on Patreon:   / 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:   / scishow  
Twitter:   / scishow  
Tumblr:   / scishow  
Instagram:   / thescishow  
----------
Sources:

https://www.acs.org/content/acs/en/ed...
http://www.nbcnews.com/id/23940463/ns...
https://geoinfo.nmt.edu/labs/argon/me...
https://www.geo.arizona.edu/~reiners/...
https://www.discovermagazine.com/the-...

https://www.thoughtco.com/luminescenc...
http://citeseerx.ist.psu.edu/viewdoc/...
https://www.brown.edu/Departments/Jou...
https://science.jrank.org/pages/1952/...
https://www.thecanadianencyclopedia.c...
https://www.dri.edu/luminescence-lab/...

http://in-africa.org/wp-content/uploa...
https://journals.openedition.org/quat...
https://www.spectroscopyeurope.com/co...
https://www.britannica.com/science/el...
https://www.futurelearn.com/courses/h...


https://www.nature.com/scitable/knowl...
https://www.bbc.com/news/science-envi...
https://advances.sciencemag.org/conte...

https://www.deerfield.k12.wi.us/facul...
https://www.thoughtco.com/seriation-s...
https://core.ac.uk/download/pdf/51053...
http://www.greerservices.com/Assets/p...
https://edu.rsc.org/resources/definin...

image sources:

https://www.usgs.gov/media/images/car...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
http://www.dent-wiki.com/dental_techn...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...