It seems you can't look, listen, or feel for sixty seconds without seeing, hearing, or bumping into the word. It's always and it's everywhere, popping onto the covers of countless magazines, serving as the subject of countless books, and springing from the lips of countless teachers and speakers. It's the focus of adulthood and the goal of adolescence.
Science fiction sometimes barely beats out science fact as technological advancements rapidly transform the world. But the changes that are anticipated aren't always the ones that arrive. Here's a look back at what the polls tell us the public has expected from scientific progress -- and how often they've been disappointed.