Many people created the news site with wordpress platform. I will help to create the news site using worpdress platform. With wordpress you can handle too much traffic. There are too many examples of news portals which created with wordpress. Mashable.com is one example of news portal. But recently they changed there platform from wordpress but for many years they used wordpress platform.
There are so many free wordpress themes which are great for news sties. You can easily create the news site using wordpress.