Martin Cooper changed the world when he pioneered the portable phone, which weighed four pounds at the time. What's next?

From his home in Del Mar, the inventor of the mobile phone, now 96, watches. Of one thing Cooper is certain: The revolution ...

Chester Greenwood invented earmuffs to battle the cold in Maine, US. By 18, he was a patent holder. He went on to file over ...

The simple landlines once used to call friends or family evolved into omnipresent glossy screens that flood our brain with ...

On the eve of America's 249th birthday, discover why — despite political division and a new Gallup low in national pride — the United States remains the greatest nation on earth. From inventions and ...

The invention of the balloon struck the men and women of the late 18th century like a thunderbolt. Enormous crowds gathered in Paris to watch one balloon after another rise above the city rooftops, ...