Google cut power usage in its data centers by several percentage points earlier this year by trusting artificially intelligent software derived from 1980s-era Atari video games. And in the years to come, the Internet giant not only could save much more electricity, but also solve far larger problems by taking on a much more complex video game. Research scientists at Google's DeepMind unit announced Friday they are developing a computer program that reads data about Blizzard Entertainment's "StarCraft II" games and learns how to play on its own. The software would have to figure out how to split its attention between micromanagement and long-term strategic decisions. It's that maneuvering that could deliver big breakthroughs.

Elon Musk's "Alien Dreadnought" is bringing a German crew on board. Tesla, the electric car company based in Palo Alto, announced Tuesday that it will buy Grohmann Engineering, based in Prum, Germany, to be renamed Tesla Grohmann Automation. Grohmann, founded by Chief Executive Klaus Grohman, is a highly regarded supplier of factory automation systems in industries ranging from automobiles to microelectronics. It has outposts around the world, including offices in Charlotte, N.C. and Chandler, Ariz. The German company employs about 700 people.

Nasa has announced that it has found evidence of flowing water on Mars. Scientists have long speculated that Recurring Slope Lineae -- or dark patches -- on Mars were made up of briny water but the new findings prove that those patches are caused by liquid water, which it has established by finding hydrated salts. Several hundred camped outside the London store in Covent Garden. The 6s will have new features like a vastly improved camera and a pressure-sensitive "3D Touch" display