Follow Journey to the Microcosmos: Twitter: https://twitter.com/journeytomicro Facebook: https://www.facebook.com/JourneyToMicro Pick up your very own Stentor pin: https://store.dftba.com/collections/all/products/stentor-coeruleus-enamel-pin Support the Microcosmos: http://www.patreon.com/journeytomicro More from Jam’s Germs: Instagram: https://www.instagram.com/jam_and_germs YouTube: https://www.youtube.com/channel/UCn4UedbiTeN96izf-CxEPbg Hosted by Hank Green: Twitter: https://twitter.com/hankgreen YouTube: null This contains the song Fireworks by Andrew Huang, available here: https://andrewhuang.bandcamp.com/track/fireworks Music by Andrew Huang: null Journey to the Microcosmos is a Complexly production. Find out more at https://www.complexly.com/ SOURCES: https://onlinelibrary.wiley.com/doi/full/10.1111/pala.12178 https://ucmp.berkeley.edu/precambrian/archean_hadean.php https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2949000/ https://www.nature.com/articles/nplants201741 https://www.ncbi.nlm.nih.gov/pubmed/25734266 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4791109/ https://www.sciencedaily.com/releases/2013/01/130117084856.htm https://phys.org/news/2014-11-photosynthesis-planet.html http://www.imperial.ac.uk/news/171487/imperial-scientist-explains-oxygen-triggered-earths/ https://www.amnh.org/explore/videos/earth-and-climate/the-rise-of-oxygen/article-earth-without-oxygen http://www.bbc.com/earth/story/20150701-the-origin-of-the-air-we-breathe https://www.sciencedaily.com/releases/2009/05/090507094218.htm https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3258841/ [14] https://www.pnas.org/content/98/5/2170.long [15] https://www.amnh.org/exhibitions/permanent/planet-earth/how-has-the-earth-evolved/banded-iron-formation [16] http://www.bbc.com/earth/story/20150701-the-origin-of-the-air-we-breathe [17] https://onlinelibrary.wiley.com/doi/full/10.1111/pala.12178 [18]https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5052739/ [19]https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4743081/