If you're a journalist, student, or science nerd who finds yourself regularly hunting for full-text articles, you can streamline the process a bit with a browser extension called Unpaywall. It works with Google Chrome and Mozilla Firefox, and displays a small padlock icon on the right side of your browser window whenever you visit a page dedicated to a scholarly article. If there's a paywall and the padlock is green, that means Unpaywall found a free version somewhere on the web, and you can click the icon to visit it immediately. In my experience, this doesn't find much more beyond a Google Scholar search, but it's a lot easier than performing manual searches all the time. Heck, even if a site isn't paywalled, Unpaywall's green icon is still easier than hunting for the "Download PDF" button on a given page.