Extremely cold drop of helium can be levitated forever

RNA editing helps octopuses cope with the cold

New study shows how adaptations to living in a cold climate promoted social evolution

NASA was a pioneer in developing and testing hypersonic aircraft (speeds beyond Mach 5.) Much of this happened in secret, across NASA's "X Program" of experimental vehicles. There were even 8 NASA pilots who secretly became astronauts during the cold war, as they flew the X-15 above 80KM.