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A roundup of the latest high-tech news from The Associated Press:

  • Yahoo introduces daily news-based series

NEW YORK — Yahoo’s news site is launching a daily, 90-second series based on its most popular stories.

Yahoo says it is teaming with Toyota and the production company Reveille to make "Who Knew?" The feature made its debut Monday on the popular news page.

Producers take the story that gets the most clicks on Yahoo’s Web site and within 24 hours make a feature that offers background material. Something new will be posted each workday.

  • USAF adds cyber training for recruits and officers

COLORADO SPRINGS, Colo. — The Air Force will train all new recruits in the basics of cyberwarfare and add more advanced schooling for others to help combat the growing threat of attacks on U.S. computer networks, a top commander said Monday.

Gen. Robert Kehler said details are still being worked out on a cyberwarfare component for basic training, but it would be brief, perhaps an hour or two total, and would cover only the fundamentals.

A more advanced, undergraduate-level training program will begin in June to train officers and enlisted personnel for a new Air Force career field in cyber operations, Kehler said. He likened it to existing undergraduate training for pilots, navigators, missile operators and space operators.

  • Google adds a touch of Microsoft to applications

MOUNTAIN VIEW, Calif. — Google has upgraded its online package of word processing and spreadsheet programs so they work even more like the Microsoft applications with which they’re competing.

The changes introduced Monday include several editing tools for word processing and quicker ways to fill cells in spreadsheets. The new features have long been staples in Microsoft’s widely used Office suite of software.

Google Inc. has been trying to lure users away from Microsoft Corp.’s products for several years in an effort to siphon revenue from one of its biggest rivals. At the same time, Google hopes to diversify its own business, lessening its financial dependence on Internet advertising powered primarily by its search engine.