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A first draft of the “tree of life” for the roughly 2.3 million named species of animals, plants, fungi and microbes -- from platypuses to puffballs -- has been released. A collaborative effort among 11 institutions, the tree depicts the relationships among living things as they diverged from one another over time, tracing back to the beginning of life on Earth more than 3.
5 billion years ago.Image credit: Duke University
