Here are some NASA inventions that have changed the world: 

• Artificial limbs: Artificial muscles designed for space exploration inspired improved artificial human limbs. 
• Memory foam: NASA invented memory foam. 
• Scratch-resistant lenses: NASA invented scratch-resistant eyeglass lenses. 
• CT scans: NASA created CT scan technology to process photos of the moon. Medical professionals now use this technology for MRIs and tomographs. 
• Communication tools: NASA inventions have led to communication tools like cell phones and televisions. 

Other NASA inventions include: 

• Freeze-dried food 
• Insulation 
• Cordless power tools 
• Water purification systems 
• Water filters 
• Charge-coupled devices 
• Lifeshears 
• Cochlear implants 
• Anti-corrosion coating

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