In an era of #fakenews, it can sometimes be tricky to work out what is legitimate scientific reporting, and what is, well, fake. New research suggests there's a handy rule of thumb for spotting the work of Climate science deniers, however: look for the polar bears.

One of the most glaring differences between legitimate science-based blogs and those that deny the science on anthropogenic climate change is how they write about polar bears and Arctic sea ice.