Google announced today that it is expanding the historical newspaper articles that are searchable online. In partnership with newspaper publishers, it is scanning their print archives and making it available on Google’s News Archive Search. Google’s Marissa Mayer is going to demo the News Archive onstage later today. She showed me a sneak peak of what makes this special. The articles are scanned, and optical character recognition can distinguish between headlines and text. This is an outgrowth of the technologies Google uses to scan books, but it is more advanced and tuned to newsprint pages.