422-methane-earth-01-dixon – Earth's original atmosphere may have been rich in methane gas, which formed an orange, smoglike haze. Digital painting for Scientific American, 2004. © 2005 by Don Dixon.
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422-methane-earth-01-dixon – Earth's original atmosphere may have been rich in methane gas, which formed an orange, smoglike haze. Digital painting for Scientific American, 2004. © 2005 by Don Dixon.