When you think about the basic ingredients for life to thrive on Earth, no doubt water and oxygen pop to mind. But there was a time on our planet when our atmosphere only had one-one thousandth of one percent of the amount of oxygen it has now, yet there were plenty of life forms around then too, although proof of them has been scarce. A recent discovery of fossilized bacteria dating to about 2.5 billion years ago provides long-sought-for evidence that the Earth was crawling with life even though it lacked much oxygen during a phase in our planet's development known as the Neoarchean Eon.
.. Continue Reading Neoarchean bacteria thrived without oxygen 2.5 billion years agoCategory: Science
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from New Atlas http://ift.tt/2fMTs3G
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