Ancient Earth May Have Smelled Like Rotten Eggs

Reporting in Proceedings of the National Academy of Sciences, researchers write of finding fossils of bacteria-like organisms that lived nearly two billion years ago. Paleobiologist Martin Brasier of the University of Oxford explains that these ancient creatures belched hydrogen sulfide, the stench of rotten eggs, after meals?suggesting the early Earth may have been a smelly place.

Source: http://www.npr.org/templates/story/story.php?storyId=180824400&ft=1&f=1007

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