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: Music from Epidemic Sound and Artlist. References:                 :_Microbiology_(Boundless)/8:_Microbial_Evolution_Phylogeny_and_Diversity/:_Nonproteobacteria_Gram-Negative_Bacteria/:_Anoxygenic_Photosynthetic_Bacteria Image Credits (in order of appearance): Doc. RNDr. Josef Reischig, CSc., CC BY-SA 3.0 , via Wikimedia Commons By James St. John - Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~ Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 53, CC BY 2.0,  By James St. John - Jaspilite banded iron formation (Soudan Iron-Formation, Neoarchean, ~ Ga; Stuntz Bay Road outcrop, Soudan Underground State Park, Soudan, Minnesota, USA) 53, CC BY 2.0,  James St. John, CC BY 2.0 , via Wikimedia Commons James St. John, CC BY 2.0 , via Wikimedia Commons By Yanenming - Own work, CC BY 3.0,  By Bäras - Own work, CC BY-SA 3.0,  By McGhiever - Own work, CC BY-SA 3.0,  By Zosma - Own work, CC BY-SA 3.0,  By John Sweeney - Own work, CC BY-SA 3.0,  By Abrget47j - Own work, CC BY-SA 3.0,  By Mhsheikholeslami - Own work, CC BY-SA 4.0,  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,  James St. John, CC BY 2.0 , via Wikimedia Commons James St. John, CC BY 2.0 , via Wikimedia Commons By Oleg Kuznetsov - Own work, CC BY-SA 4.0,  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:, CC BY 2.5,