Free academic papers

For the past 8 years Sci-Hub has been the Napster of academic papers. It’s a pirate site that serves up scholarly journal articles usually stashed behind paywalls. You copy and paste the link from the official journal site (or its DOI) into the Sci-Hub website and it immediately gives you the PDF. I have no qualms using it. Many researchers who have legitimate access to the journals prefer to use Sci-Hub because its interface is easier, consistent, and better designed. — KK