Inventions That Changed Everything, Part 4: The Telephone
"Mr. Watson, come here, I want to see you." Here is how the telephone was invented, why its origins are still debated, and how it connected the world.
Inventions That Changed Everything, Part 2: The Steam Engine
For most of history, power came from muscles, wind and water. The steam engine changed that, powering factories, railways and ships, and launching the modern industrial world.
Inventions That Changed Everything, Part 1: The Printing Press
Before printing, a single book could take months to copy by hand. Here is how movable type spread knowledge across the world and reshaped religion, science and politics.