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in the Proceedings of the National Academy of Sciences on Monday. The robots in question arent little constructions of silicon and metal鈥攊nstead, theyre biological machines called xenob
stanley cup ots that University of Vermont and Tufts University researchers first described last year. The xenobots are genetically unmodified, cultivated stem cell bundles of the African clawed frog, Xenopus laevis. Joshua Bongard, a University of Vermont computer scientist and robotics expert, referred to them in a press release last January as novel living machines that are a new class of artifact: a living, programmable organism. The xenobots are programmable in the sense that their rudimentary behaviors ar
stanley cups e mostly pre-determined by their initial shapes. As Gizmodo reporter George Dvorsky wrote last year, Using an evolutionary algorithm, the researchers devised thousands of possible designs for their novel lifeform, with the capacity for unidirectional locomotion being a fundamental physical requirement. 8230; Specialized cells were then grown and meticulously assembled to match the form designed by the computer. The xenobots are capable of living for days to weeks in an aquatic environment using the energy stored in their cells. While their lifetimes can be extended with a nutrient-rich environment, afterward
stanley water bottle s they inevitably biodegrade. Defining robot was never easy, although older technologies sort of obscured that fact and made it seem like we knew what a good definition of robot was Xstp DC Announces Batman amp; Robin: Year One
Displaying decapitated heads on wooden stakes is something you might expect from the Middle Ages, but as a new paper published in the journal Antiquity shows, its a practice that goes back much further in time than we thought. And in fact, the discovery is the first evidence of this behavior among Mesolithic h
stanley quencher unter-gatherers, who arent known for dramatic displays of this sort. The researchers who found the skulls are at a loss to explain why these ancient Europeans would have mounted them on posts, but the reason may not be as sinister as it appears. Researchers from Stockholm University and the Cultural Heritage Foundation found the skulls at the bottom of what was once a lake, at the Kanaljorden excavation site in Sweden near the Motala Stro虉m river. The human remains, found at an 8,000-year-old burial site, were uncovered back in 2011, and the details of the scientific analysis were finally published today. This Mesolithic sit
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stanley cup under investigation since 2009, with archaeologists pulling up butchered animal bones, tools fashioned from antlers, wooden stakes, and bits of human skull. The ancient Scandinavians who used to live at the site survived by hunting, fishing, and gathering. Due to the poor archaeological record, scientists know very little about the sociocultural aspects of these people. Swedish archaeologists found the remains of 10 individuals鈥攏ine adults and one infant鈥?deliberately placed atop a densely packed layer of large stones. One of the adult
