How Bad Was The Great Oxidation Event?

Researched and Written by Leila Battison Narrated and Edited by David Kelly Art by Khail Kupsky Thumbnail Art and Art by Ettore Mazza If you like our videos, check out Leila's youtube channel: https://www.youtube.com/channel/UCXIk7euOGq6jkptjTzEz5kQ Music from Epidemic Sound and Artlist. References: http://www.bbc.co.uk/earth/story/20150701-the-origin-of-the-air-we-breathe  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6717284/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1183582/  https://science.sciencemag.org/content/160/3829/729 https://sci-hub.do/10.1126/science.160.3829.729  https://www.youtube.com/watch?v=qERdL8uHSgI&feature=emb_logo  https://www.michigan.gov/documents/deq/NSFE_304650_7.pdf  https://courses.lumenlearning.com/boundless-microbiology/chapter/types-of-metabolism/  https://sci-hub.do/10.2475/ajs.s4-23.135.187  https://www.scientificamerican.com/article/timeline-of-photosynthesis-on-earth/  https://books.google.co.uk/books?id=HqGWEAnByeMC&pg=PA255&redir_esc=y#v=onepage&q&f=false  https://www.researchgate.net/publication/226483301_The_Evolution_of_Chlorophylls_and_Photosynthesis   https://bio.libretexts.org/Bookshelves/Microbiology/Book%3A_Microbiology_(Boundless)/8%3A_Microbial_Evolution_Phylogeny_and_Diversity/8.09%3A_Nonproteobacteria_Gram-Negative_Bacteria/8.9B%3A_Anoxygenic_Photosynthetic_Bacteria https://www.researchgate.net/publication/41576896_Evolution_of_Minerals/link/0f3175387497ed308d000000/download https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/9781119382508.ch3 Image Credits (in order of appearance): Doc. RNDr. Josef Reischig, CSc., CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons By James St. John - Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.69 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 53, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=41251871 By James St. John - Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~2.69 Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 53, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=41251871 James St. John, CC BY 2.0 https://creativecommons.org/licenses/by/2.0, via Wikimedia Commons James St. John, CC BY 2.0 https://creativecommons.org/licenses/by/2.0, via Wikimedia Commons By Yanenming - Own work, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=25647440 By Bäras - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=2840543 By McGhiever - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=33618499 By Zosma - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=10887879 By John Sweeney - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=18605199 By Abrget47j - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=29864282 By Mhsheikholeslami - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=91982743 By James St. John - Tillite (Coleman Member, Gowganda Formation, Paleoproterozoic, ~2.3 Ga; Straight Lake West roadcut, north of Temagami, Ontario, Canada) 10, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=84647970 James St. John, CC BY 2.0 https://creativecommons.org/licenses/by/2.0, via Wikimedia Commons James St. John, CC BY 2.0 https://creativecommons.org/licenses/by/2.0, via Wikimedia Commons By Oleg Kuznetsov - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=89577421 Life restoration of Mimoperadectes. By Jorge González - Horovitz I, Martin T, Bloch J, Ladevèze S, Kurz C, et al. (2009) Cranial Anatomy of the Earliest Marsupials and the Origin of Opossums. PLoS ONE 4(12): e8278. doi:10.1371/journal.pone.0008278.g006, CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=8760185