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by livescience staff here are the stories behind the most amazing images in the world of science this week. a recap of the coolest photos featured on live science. tech view more us military's 'jetson' laser can id your unique heartbeat hundreds of feet away by mindy weisberger heartbeat-scanning lasers...
"but we had positive experiences with d printing on a military project." top: the ge x took its maiden flight in march. image credit: ge aviation. customized arcam d printers fuse layers of tial powder with an electron beam several times as powerful as the lasers used in typical d printers. image credit...