There are quite a few bits of “future tech” in the various Star Trek series that are a little hard to believe, and the device their medics use for treating cuts is definitely one of them... they just shine the gizmo on a wound, and it instantly heals up. C’mon, that could never work! Or could it? The US Air Force Office of Scientific Research (AFOSR) is now developing technology that could treat airmen’s battlefield injuries with - you guessed it - light. What’s next, replicator-made Klingon food?