Paul HallLatest Articles1/6/2026Who invented immersive audio?1/6/2026Who invented health APIs?1/1/2026What were Alexander Graham Bell's goals?1/1/2026Where was the first glider made?1/1/2026Who invented zoning systems?1/1/2026What did Ashok Gadgil invent?1/1/2026Where did George and László Biro invent the ballpoint pen?