The earth has been through some major changes! Animals we wish still existed: SUBSCRIBE (it's free): GET THE BOOK: Written by Tyler Irving (@tylereirving), Mitchell Moffit and Greg Brown Instagram and Twitter: @whalewatchmeplz and @mitchellmoffit Clickable: and AsapINSTAGRAM: Facebook: Twitter: Tumblr: Vine: Search “AsapSCIENCE“ on vine! SNAPCHAT 'whalewatchmeplz' and 'pixelmitch' Created by Mitchell Moffit (twitter @mitchellmoffit) and Gregory Brown (twitter @whalewatchmeplz). Send us stuff! ASAPSCIENCE INC. P.O. Box 93, Toronto P Toronto, ON, M5S2S6 Further Reading-- Overviews: Ordovician: Role of CO2 levels: #.VK1lhmTF98s Devonian: Permian Good overviews: Size of lava fields: Effect of volcanoes; Recovery: Triassic Cretaceous: 6th mass extinction: By the numbers: Extinction rates:
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