New information has helped us understand where domestic horses came from. And by counting some tree rings, researchers were able to find evidence of Norse presence in the Americas in 1021 CE. Hosted by: Hank Green SciShow is on TikTok! Check us out at www.tiktok.com/@scishow ---------- 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: Bryan Cloer, Chris Peters, Matt Curls, Kevin Bealer, Jeffrey Mckishen, Jacob, Christopher R Boucher, Nazara, charles george, Christoph Schwanke, Ash, Silas Emrys, Eric Jensen, Adam Brainard, Piya Shedden, Alex Hackman, James Knight, GrowingViolet, Sam Lutfi, Alisa Sherbow, Jason A Saslow, Dr. Melvin Sanicas, Melida Williams, Tom Mosner ---------- Looking for SciShow elsewhere on the internet? SciShow Tangents Podcast: www.scishowtangents.org Facebook: www.facebook.com/scishow Twitter: www.twitter.com/scishow Instagram: instagram.com/thescishow ---------- Sources: www.science.org/doi/10.1126/science.aao3297 pubmed.ncbi.nlm.nih.gov/30261039/ pubmed.ncbi.nlm.nih.gov/33273635/ pubmed.ncbi.nlm.nih.gov/33046550/ press.springernature.com/the-origins-and-spread-of-domestic-horses-from-the-western-euras/19733626 www.nature.com/articles/s41586-021-04018-9 journals.lib.unb.ca/index.php/NFLDS/article/view/140/236 www.britannica.com/science/carbon-14-dating www.cambridge.org/core/journals/radiocarbon/article/intcal20-northern-hemisphere-radiocarbon-age-calibration-curve-055-cal-kbp/83257B63DC3AF9CFA6243F59D7503EFF press.springernature.com/evidence-for-european-presence-in-the-americas-in-ad-1021/19739832 www.nature.com/articles/s41586-021-03972-8 Images: www.storyblocks.com/video/stock/horse-rider-is-moving-fast-horseman-on-sky-background-stallion-is-trained-for-racing-trotter-of-spanish-breed-rz0znl7gwj2lzwhju www.inaturalist.org/observations/79341109 www.nature.com/articles/s41586-021-04018-9#Fig1 www.istockphoto.com/vector/black-sea-and-caspian-sea-region-political-map-gm800149220-129809953 www.istockphoto.com/photo/wild-horses-running-free-gm1019461046-273973110 commons.wikimedia.org/wiki/File:Yamnaya_Steppe_Pastoralists.jpg commons.wikimedia.org/wiki/File:Standard_of_Ur_-_War.jpg www.istockphoto.com/photo/horses-run-gallop-in-dust-gm873152940-243854032 www.istockphoto.com/photo/bay-horses-grazing-in-pasture-enjoying-the-early-spring-sunshine-the-cotswolds-gm1248172569-363487761 commons.wikimedia.org/wiki/File:L%27AnseAuxMeadowsModel.jpg www.nature.com/articles/s41586-021-03972-8#Fig9 www.storyblocks.com/video/stock/a-close-up-view-of-the-solar-flares-on-the-surface-of-the-sun---some-elements-furnished-by-nasa-hy72e36_wkh0qvvq9 www.nature.com/articles/ncomms9611#Fig2 www.istockphoto.com/photo/background-huon-pine-gm139746514-1364276 www.nature.com/articles/s41586-021-03972-8#Fig2 commons.wikimedia.org/wiki/File:Leif_Erikson_Discovers_America_Hans_Dahl.jpg www.istockphoto.com/photo/little-pony-gm182173742-10263668

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