How does a search engine find just the right information? It uses a set of instructions you never see. And that wouldn't be possible without the ideas of Ada Lovelace-the first person to describe an algorithm. Learn about Lovelace's groundbreaking impact on the history of computers. Events that Changed Your World When we get sick, our doctors give us medicine. When we want to visit our grandparents across the country, we hop on a plane. And when we want something in our community to change, we vote for people who share our ideas. A lot of the things we have and do now began as strange or challenging ideas-or even accidents! Discover the history behind events that changed your world-and the people who made them possible.