On the right, scroll the list of stories you’ve read. To open a story, click its title.
The list includes stories you saved on your Mac, choose News > Clear History, then choose one of the following:
Clear History: Clears your reading history.
Clear Recommendations: Clears the information that’s used from your reading habits to recommend stories. Choosing this option can change the types of channels, topics, and stories shown in the Today and other feeds in Apple News on your Mac and Get the news on all your devices