9 votes The most cutting-edge science of 1845 Posted August 29 by Adys Tags: 19th century, history, media, journalism, magazines, scientific american, time box, videos, hank green, source.youtube https://www.youtube.com/watch?v=M0U3CVkJ2kE Link information This data is scraped automatically and may be incorrect. Authors Hank Green Duration 7:13 Published Aug 28 2025