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Go to http://curiositystream.com/biographics for unlimited access to the world’s top documentaries and nonfiction series. Use promo code BIOGRAPHICS to get your first 30 days, completely free! → Subscribe for new videos at least twice a week! https://www.youtube.com/c/biographics?sub_confirmation=1 Love content? Check out Simon's other YouTube Channels: Geographics: https://www.youtube.com/channel/UCHKRfxkMTqiiv4pF99qGKIw MegaProjects: https://www.youtube.com/channel/UC0woBco6Dgcxt0h8SwyyOmw SideProjects: https://www.youtube.com/channel/UC3Wn3dABlgESm8Bzn8Vamgg Casual Criminalist: https://www.youtube.com/channel/UCp1tsmksyf6TgKFMdt8-05Q TopTenz: https://www.youtube.com/user/toptenznet Today I Found Out: https://www.youtube.com/user/TodayIFoundOut Highlight History: https://www.youtube.com/channel/UCnb-VTwBHEV3gtiB9di9DZQ XPLRD: https://www.youtube.com/channel/UCVH8lH7ZLDUe_d9mZ3dlyYQ Business Blaze: https://www.youtube.com/channel/UCYY5GWf7MHFJ6DZeHreoXgw Simon's Social Media: Twitter: https://twitter.com/SimonWhistler Instagram: https://www.instagram.com/simonwhistler/ This video is #sponsored by Curiosity Stream. Source/Further reading: This Podcast Will Kill You, episode on Ricin: https://thispodcastwillkillyou.com/2020/01/07/episode-41-ricin-a-bad-seed/ History of Ricin, and the castor plant: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6628454/ CDC Overview: https://emergency.cdc.gov/agent/ricin/facts.asp Britannica overview: https://www.britannica.com/science/ricin PopSci overview: https://www.popsci.com/science/article/2013-04/everything-you-need-know-about-ricin-poison-sent-us-senator/ Global Security, ricin as a bioweapon: https://www.globalsecurity.org/wmd/intro/bio_ricin.htm Mortality rates of ricin types (pdf): https://dhhr.wv.gov/oeps/disease/AtoZ/documents/ricin/ricin-protocol.pdf Border Cave ricin: https://www.archaeology.org/issues/61-1301/features/267-top-10-2012-border-cave-beeswax-poison Markov assassination: https://edition.cnn.com/2003/WORLD/europe/01/07/terror.poison.bulgarian/ 2003 Ricin letters: https://archives.fbi.gov/archives/news/pressrel/press-releases/ricin-letter 2004 Ricin powder on Capitol Hill: https://edition.cnn.com/2004/US/02/03/senate.hazardous/ GQ, the crazy inside story on the 2013 Ricin Letters: https://www.gq.com/story/paul-kevin-curtis-elvis-impersonator-ricin-assassinations May 2013 ricin letters: https://www.nbcnews.com/news/us-news/woman-who-mailed-ricin-letters-obama-sentenced-18-years-n157531
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