Microsoft rolled out new features on its Bing search engine powered by artificial intelligence, including one that summarizes the two opposing sides of contentious questions, and another that measures how many reputable sources are behind a given answer.

Tired of delivering misleading information when their algorithms are gamed by trolls and purveyors of fake news, Microsoft and its tech-company rivals have been going out of their way to show they can be purveyors of good information -either by using better algorithms or hiring more human moderators.Microsoft is also trying to distinguish its 2nd-place search engine from long-dominant Google and position itself as an innovator in finding real-world applications for the latest advances in artificial intelligence. Bing's new capabilities are designed to give users more confidence that an answer is correct and save them time.

"You could be asking, 'Is coffee good for you?' We know that there are no good answers for that," Microsoft's corporate vice president Jordi Ribas said. But the new search features side-by-side opposing perspectives. One source emphasizes coffee's ability to increase metabolism and another shows it can raise blood pressure. Similar questions can also be asked on more sensitive topics, such as whether the death penalty is a good idea.