This infographic looks at science in general, rather than just chemistry. It’s in a similar vein to the Rough Guide to Spotting Bad Science posted last year, but this time looking at the hierarchy of different types of scientific evidence. You might think science is science, but some evidence is ranked higher in the scientific community than others, and having an awareness of this can help you sort the science from the pseudoscience when it comes to various internet claims.

This graphic was inspired by a  Twitter exchange regarding the artificial sweetener aspartame, during which one user who with repeatedly linked  to poor quality ‘evidence’ in order to try and prove their point.