so National Geographic asked Hayden to list what she considers 10 of the most meaningful advances in history—the inventions and innovations responsible for the trappings of modern life.

Many of India’s ideas were buried in ancient texts or passed on orally, making them hard to recognize or credit. So, while the world was busy catching up, India had already been there ...

The Virtual Museum of Ancient Inventions is a project begun by the students in the course Ancient Inventions, which was offered for the first time in the spring semester of 1997. More inventions will ...