Where can you see all pages, news and events?
Use the content lists for an overview of everything on the website. In the editor you work on one item at a time. To see what else exists, which items are drafts or scheduled, or to tidy up several news items quickly, open the lists under Settings → Content: Pages, News and Events.
From these lists you can create, publish, move to draft and delete content. The actual copy and blocks are still edited on the page itself: Edit opens the item in the editor.