Head back to Twitter's home page and then compose a tweet using the box near the top of the window. Now, paste the tweet's URL. You can do this by right-clicking in the box and selecting the "Paste" option, using the Ctrl+P keyboard shortcut on Windows, or hitting Cmd+P on Mac. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.