How Ancient Human Clues Ended Up in Rock

A lot of what we know about ancient human civilizations comes from the things they leave behind. But sometimes, humans don’t live in places long enough to leave these clues. So, some researchers have turned to techniques outside traditional archaeology to find evidence of ancient humans.Hosted by: Michael ArandaSciShow 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:Chris Peters, Matt Curls, Kevin Bealer, Jeffrey Mckishen, Jacob, Christopher R Boucher, Nazara, charles george, Christoph Schwanke, Ash, Silas Emrys, KatieMarie Magnone, Eric Jensen, Adam Brainard, Piya Shedden, Alex Hackman, James Knight, GrowingViolet, Sam Lutfi, Alisa Sherbow, Jason A Saslow, Dr. Melvin Sanicas----------Looking for SciShow elsewhere on the internet?Facebook: http://www.facebook.com/scishowTwitter: http://www.twitter.com/scishowTumblr: http://scishow.tumblr.comInstagram: http://instagram.com/thescishow----------Sources:https://humanorigins.si.edu/education/introduction-human-evolutionhttps://oceanexplorer.noaa.gov/facts/stalactite.htmlhttps://earthobservatory.nasa.gov/features/Paleoclimatology_Speleothemshttps://www.nps.gov/grba/learn/nature/speleothems-cave-formations.htmhttps://eos.org/articles/sooty-layers-in-stalagmites-record-human-activity-in-caveshttps://www.sciencedirect.com/science/article/abs/pii/S030544032030176Xhttps://www.sciencedirect.com/science/article/abs/pii/S1040618217305499https://www.radiocarbon.com/about-carbon-dating.htmhttps://www.radiocarbon.com/ams-dating-pottery.htmhttps://isobarscience.com/u-th_dating/https://www.osti.gov/servlets/purl/4844188#https://www.britannica.com/science/half-life-radioactivityhttps://www3.nd.edu/~nsl/Lectures/phys10262/art-chap3-8.pdfImages:https://commons.wikimedia.org/wiki/File:Prehistoric_Tools_-_Les_Combarelles_-_Les_Eyzies_de_Tayac_-_MNP.jpghttps://www.istockphoto.com/photo/cuevas-del-drach-or-dragon-cave-mallorca-island-spain-gm1179433711-330023935https://www.istockphoto.com/photo/big-room-in-carlsbad-cavern-national-park-gm172155099-3260171https://www.istockphoto.com/photo/wierzchowska-gorna-cave-with-stalactites-and-stalagmites-in-wierzchowie-poland-gm157721344-7758717https://commons.wikimedia.org/wiki/File:Towers_of_darkness.jpghttps://www.istockphoto.com/photo/dripstone-cave-under-budapest-gm696377154-128855077https://www.istockphoto.com/photo/luray-caverns-gm182863860-14062310https://www.storyblocks.com/video/stock/water-ripple-blue-3-b7dzp53https://commons.wikimedia.org/wiki/File:HEUraniumC.jpghttps://www.istockphoto.com/photo/a-nature-dark-tunnel-through-mountain-to-a-cave-gm1266981247-371581597https://www.istockphoto.com/photo/entrance-of-kocain-cave-near-antalya-gm655989436-119612165https://commons.wikimedia.org/wiki/File:Biface_Cintegabelle_MHNT_PRE_2009.0.201.1_V2.jpghttps://www.istockphoto.com/photo/inside-karst-caves-stalagmites-and-stalactites-gm1256990492-368224277https://www.eurekalert.org/multimedia/667844