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Scientists have used animal cells to create an artificial form of meat without the need for the rearing and slaughtering of livestock. The product, known as "in vitro meat", is made from thousands of stem cells which multiply to produce strips of muscle tissue without ever leaving the lab. Dutch scientists experimenting with pig cells say it could be just six months before the first test tube sausage is produced, and within a year lab-grown burgers could be created using similar techniques with cows.

"Lockheed Martin's approach does include a sort of basic theory of mind, in the sense that the robot makes assumptions about how to act covertly in the presence of humans," says Alan Wagner of the Georgia Institute of Technology in Atlanta, who works on artificial intelligence and robot deception.

University of Pennsylvania teaches their PR2 to be able to read in the wild.  Video shows the PR2 roaming the hallways reading from various items sitting around and signs on the wall.