Discover 25 accidental inventions that changed the world! From penicillin to Post-it Notes, explore how serendipity sparked ...

Explore landmark American inventions from Eli Whitney’s cotton gin to the Wright brothers’ airplane and Jonas Salk’s polio vaccine.

The United States has spent its quarter millennium of existence creating tools that reshaped the modern world. As the country celebrates its 250th birthday, here are five tools invented within its ...

Historians say the first manmade glass appeared around 3,500 BCE in Mesopotamia, when workers there discovered how to mix sand, soda, lime, and glass. 2. "Three-point seatbelt. It's saved over a ...

Accidental inventions have shaped the world in ways we rarely stop to consider. Over time, brilliant minds have created countless innovations that improve our everyday lives, from simple foods and ...

The course of American history has been changed by countless inventions, from the tiny things that made everyday life different to huge landmark projects that made history. To compile a list of 100 ...