Fossil sheds light on the history of sex: A long, thin rope-like creature standing erect on the sea floor up to 570 million years ago has been identified as the first animal on Earth to have had sex. [Times]
New Analysis Suggests Earlier Start for Upright Walking: As early as six million years ago, apparently close to the beginning of the human lineage, an ancestral species had already developed the transforming ability for upright walking, scientists reported on Thursday. [NYT]
Got milk? That’s an evolutionary plus: DNA ‘clock’ points to when mammals shifted away from egg-laying. [MSNBC]
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