Startling new finding: 600 million years ago, a biological mishap changed everything - The Washington Post

https://www.washingtonpost.com/news/morning-mix/wp/2016/01/11/startling-new-discovery-600-million-years-ago-a-single-biological-mistake-changed-everything/

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First saved: 2016-Jan-11 (Mon)
Last checked: 2016-Jan-11 (Mon), response 200