Search engines have improved without you noticing. How did they do it? Jim Giles, Ferris Jabr and New Scientist try to find out.
Anyone can publish on the web, but it would be better if some people didn’t; the world does not need another site that provides advice on how to unlock an iPhone or find cheap car insurance. Now new evidence shows that search engines have upped their game to make sure their results are not dominated by such low-quality sites.