For those who are in the search for some Google news, there is now a new section that has been added to the Google Web History section of a logged in Google account. The new section entails the ability to track over time what Google Now Cards Google is showing you every day.
Google will show you what type of cards are served, such as cards from articles, birthdays, stocks, weather, and more. Also, Google will show you if you have viewed the card, and will allow you to remove the history by selecting and deleting it from your history.
You can access your Google Now Cards at https://history.google.com/history/now.