It is perfectly legal as long as it comes from a copyright-free website. Just look for the copyright info on that particular site to meet their conditions. For example, Wikipedia allows you to use their content as long as you include the sources and links that are associated with it.
Also, if the website has an RSS feed it is legal to place the RSS feed on your website. The new version of WordPress allows you to insert RSS feeds onto your website, but the links go directly to their website with the content and do not display the content on your website though.
Just read the policy of the website that you want to pull the news sources from to play it safe.
Prashant Verma requested your answer