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...years ago. Early modern humans, the results suggested, shared parts of Eurasia not only with Neanderthals but a totally different human-like creature, and all three probably came into contact (the finger bone was found within 65 miles of known Neanderthal and modern human sites). (See the top 10 new species...
Krause and Pääbo's analysis, published online on Wednesday by the journal Nature, is the first to identify a novel hominin based on genetic analysis alone - without fossilized remains to offer anatomical reference. But the researchers stop short of declaring the human-like creature a brand-new species. Instead of giving it a Latin name, they refer to the creature publicly as "the Denisova hominin" and in internal e-mails and discussions simply as "X." But privately, scientists at Max Planck - a world leader in the painstaking process of separating genomes from other DNA (of viruses...
...therefore does not give as complete a picture as nuclear genome sequencing. "In terms of mitochondrial DNA alone, this hominin was twice as distant from us as Neanderthals," says Krause. "The evidence is already very strong that we are looking at a previously unknown hominin, and possibly a new species." (See the top 10 scientific discoveries...
Scientists have no idea what the Denisova hominin looked like or how it behaved and interacted with early modern humans, and perhaps never will without a more complete fossil record. But even the preliminary genetic analysis has already shed new light on human ancestors' exodus from Africa and subsequent spread across the globe. The dominant theory holds that various hominin species left Africa in a series of distinct migrations, beginning with Homo erectus or a close relative a little under 2 million years ago, followed by the lineage that gave rise to Neanderthals, and finally the ancestors of modern humans...
Worn diagonally over one shoulder a la a messenger bag, the slings looked cool and promised what every new mother covets: a blissful baby, parent-child bonding and a free pair of hands for mom. Yet try as I might, I couldn't relax as I watched my newborn disappear into the voluminous folds of fabric. Was he so scrunched up it was hurting his neck? Could he breathe okay in there? I was also simultaneously worried he was about to slide out, so I always kept a hand on him. And if I had to do that, what...