Yeah! What usefull things NASA has done for human kind?!
Other than: Memory foam, Portable cordless vacuum, Freeze-dried food, CMOS image sensors, Light-induced oxidation air scrubbers, Weight-resistance exercise equipment, Water purification systems, Firefighting protective gear, Highway safety grooves, Image stabilization technology, Anti-icing aircraft systems, Scratch-resistant lenses, Infrared ear thermometers, Insulation materials (radiant barrier foil), Aerogel insulation products, Programmable heart pacers (derived control tech), LASIK eye-surgery mapping technology, Advanced prosthetics components, Shock-absorbing athletic shoe materials, Improved tire rubber compounds, Portable blood analyzers, Satellite-based weather data applications, Crop monitoring algorithms, Oil spill mapping technologies, Baby formula nutrient fortification (DHA/ARA research contributions)