INVENTIONS

The man who made electronic television signals a reality made only one on-camera appearance. No one knew who he was.

In 1860, a tragic head injury helped turn a quiet bookseller into one of the world's most consequential photographers.

Sometimes the best tech is right in front of us, thanks to millions of years of evolution.

From Elvis's near-final resting place to the porta-johns that saved a pilot's life, these are the toilets that altered world events.

People have come up with a range of ingenious, harebrained, and sometimes grim but often remarkable ways to stay cool during a summer scorcher.

The original reason electrical plugs had holes isn’t the same reason they have holes these days.

Olympic curling stones are pretty self-policing—here's what those green and red lights can tell you.