Wordpress making two URL's in search engines

Wordpress making two URL's in search engines

I have a blog with 10000 article and im trying to get to registered in
google news.
Google is rejecting my application as google finds two URL's:
1) http://url.com/article-name/article-id/
2) http://url.com/article-name/
How do i stop google from indexing the second URL and load only first URL.