The Article Screen displays the contents of a single article. You get to it by tapping an item in the tabloid page of article summaries on the Articles Screen.
Tapping the share button in the top right corner gives you several options, including a chance to mail or post the article to social networks, add it to Safari's Reading List, open the web page in the Safari browser, or start speaking.
You can page through articles one by one by swiping left or right from the edge of the screen. As with the articles screen, swipe right to left for new articles, or left to right to review seen ones. If you have trouble swiping from the middle of the page, try swiping from the edges.
Tap on the headline, or on the Visit Web Page link at the bottom of the screen, to go to the originating web site to see the full article in context.