Is there a plugin that will automatically search for new news article, like from Google, and post them to my blog?
If you can grab a feed, BlogSenseWP can do this for you. Also profit.fm has a private plugin called Instant Curator that provides a Google News shortcode (will generate the content via keyword, and you can use an automation software like BlogSense or WP Robot to set up a keyword driven campaign to populate a template holding the shortcode.