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                                    Learning how to bounce a ball on a racket 
                                    seems like child's play only because we know 
                                    instinctively how to solve what is an inherently 
                                    complicated problem. Researchers have figured 
                                    out how we keep the ball stable and have taught 
                                    that trick to robots. Will tennis stars meet 
                                    the same fate as chess masters? 
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                              Evolution 
                              breeds cooperation 
                              Breeding generation after generation of software 
                              agents could lead to better ways to program teams 
                              of robots or search the Web. But whether the agents 
                              will talk to each other depends on the mission. 
 
                               Chip 
                              promises brighter wearable displays 
Semiconductors are the secret to brighter, more durable microdisplays. The key is using a semiconductor that shines blue. 
 
                               Light 
                              source brightens prospects for security 
Now that researchers have figured out how to squeeze out one photon at a time, the next step is controlling where those photons go. A microscopic cone seems to do the trick, and a result could be truly secure communications. 
 
                               Bound 
                              bits could bring bigger disks 
Cramming more bits onto disk drives means making smaller bits. But make the bits too small and they become unstable. IBM researchers are fencing in individual bits to help them hold themselves together. 
 
                              
                              
 
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