Xconomy -- Science fiction writers have long imagined putting humans into a hibernation-like state to travel long distances in space. Doctors see another application here on Earth, in which cooling the body could slow down blood flow just enough to buy time when a patient could bleed to death or suffer serious brain damage. Now Redmond, WA-based Physio-Control and San Diego-based BeneChill are teaming up to see if they can apply this basic principle in a new product in Europe.