{"id":236604,"date":"2026-05-06T11:18:06","date_gmt":"2026-05-06T16:18:06","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/05\/genetic-bottlenecks-how-few-people-can-start-a-world-or-restart-one"},"modified":"2026-05-06T11:18:06","modified_gmt":"2026-05-06T16:18:06","slug":"genetic-bottlenecks-how-few-people-can-start-a-world-or-restart-one","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/05\/genetic-bottlenecks-how-few-people-can-start-a-world-or-restart-one","title":{"rendered":"Genetic Bottlenecks \u2014 How Few People Can Start a World? Or Restart One?"},"content":{"rendered":"<p><\/p>\n<p><iframe style=\"display: block; margin: 0 auto; width: 100%; aspect-ratio: 4\/3; object-fit: contain;\" src=\"https:\/\/www.youtube.com\/embed\/BVr-mKTN8qw?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope;\n   picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<p>When disaster leaves only a handful, can a civilization restart? We explore genetic bottlenecks, colony failure, and the limits of survival.<\/p>\n<p>Get Nebula using my link for 50% off an annual subscription: <a href=\"https:\/\/go.nebula.tv\/isaacarthur\">https:\/\/go.nebula.tv\/isaacarthur<\/a>.<br \/> Watch my exclusive video Surviving a New Ice Age: <a href=\"https:\/\/nebula.tv\/videos\/isaacarthur-\">https:\/\/nebula.tv\/videos\/isaacarthur\u2013<\/a>\u2026 out Practical Engineering: <a href=\"https:\/\/nebula.tv\/practicalconstructi\">https:\/\/nebula.tv\/practicalconstructi<\/a>\u2026 \ud83d\uded2 SFIA Merchandise: <a href=\"https:\/\/isaac-arthur-shop.fourthwall\">https:\/\/isaac-arthur-shop.fourthwall<\/a>\u2026 \ud83c\udf10 Visit our Website: <a href=\"http:\/\/www.isaacarthur.net\">http:\/\/www.isaacarthur.net<\/a> \u2764\ufe0f Support us on Patreon: <img alt=\"\" class=\"\"> \/ isaacarthur \u2b50 Support us on Subscribestar: <a href=\"https:\/\/www.subscribestar.com\/isaac-a\">https:\/\/www.subscribestar.com\/isaac-a<\/a>\u2026 \ud83d\udc65 Facebook Group: <img alt=\"\" class=\"\"> \/ 1,583,992,725,237,264 \ud83d\udce3 Reddit Community: <img alt=\"\" class=\"\"> \/ isaacarthur \ud83d\udc26 Follow on Twitter \/ X: <img alt=\"\" class=\"\"> \/ isaac_a_arthur \ud83d\udcac SFIA Discord Server: <img alt=\"\" class=\"\"> \/ discord Credits: Genetic Bottlenecks \u2013 How Few People Can Start a World? Or Restart One? Written, Produced &amp; Narrated by: Isaac Arthur Select imagery\/video supplied by Getty Images Chapters 0:00 Intro 10:56 Restoration 19:26 Practical Engineering.<br \/> Check out Practical Engineering: <a href=\"https:\/\/nebula.tv\/practicalconstructi\">https:\/\/nebula.tv\/practicalconstructi<\/a>\u2026<\/p>\n<p>\ud83d\uded2 SFIA Merchandise: <a href=\"https:\/\/isaac-arthur-shop.fourthwall\">https:\/\/isaac-arthur-shop.fourthwall<\/a>\u2026<br \/> \ud83c\udf10 Visit our Website: <a href=\"http:\/\/www.isaacarthur.net\">http:\/\/www.isaacarthur.net<\/a>.<br \/> \u2764\ufe0f Support us on Patreon: \/ isaacarthur.<br \/> \u2b50 Support us on Subscribestar: <a href=\"https:\/\/www.subscribestar.com\/isaac-a\">https:\/\/www.subscribestar.com\/isaac-a<\/a>\u2026<br \/> \ud83d\udc65 Facebook Group: \/ 1583992725237264<br \/> \ud83d\udce3 Reddit Community: \/ isaacarthur.<br \/> \ud83d\udc26 Follow on Twitter \/ X: \/ isaac_a_arthur.<br \/> \ud83d\udcac SFIA Discord Server: \/ discord.<br \/> Credits:<br \/> Genetic Bottlenecks \u2013 How Few People Can Start a World? Or Restart One?<br \/> Written, Produced &amp; Narrated by: Isaac Arthur.<br \/> Select imagery\/video supplied by Getty Images.<\/p>\n<p>Chapters.<br \/> 0:00 Intro.<br \/> 10:56 Restoration.<br \/> 19:26 Practical Engineering<\/p>\n","protected":false},"excerpt":{"rendered":"<p>When disaster leaves only a handful, can a civilization restart? We explore genetic bottlenecks, colony failure, and the limits of survival. Get Nebula using my link for 50% off an annual subscription: https:\/\/go.nebula.tv\/isaacarthur. Watch my exclusive video Surviving a New Ice Age: https:\/\/nebula.tv\/videos\/isaacarthur\u2013\u2026 out Practical Engineering: https:\/\/nebula.tv\/practicalconstructi\u2026 \ud83d\uded2 SFIA Merchandise: https:\/\/isaac-arthur-shop.fourthwall\u2026 \ud83c\udf10 Visit our Website: [\u2026]<\/p>\n","protected":false},"author":661,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1902,493,412],"tags":[],"class_list":["post-236604","post","type-post","status-publish","format-standard","hentry","category-bioengineering","category-climatology","category-genetics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/236604","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/661"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=236604"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/236604\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=236604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=236604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=236604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}