Unexpected Elements looks for the science behind the news, and this week the news is glittery and pink with the release of the Barbie movie. The movie has very pink aesthetic, so we get philosophical about the colour pink – does it actually exist and if so, how come it isn’t in the rainbow? We also discover how this iconic doll has performed some actual valuable science, helping cryogenic researchers design space suit technology to help future missions to the moon. In Ask the Unexpected this week we’ve got dog science as we answer the age old joke: how does my dog smell? Terrible, obviously, but it also depends on something called the vomeronasal organ.. And there are newcomers in Germany and they’re troublemakers. We hear how an unpleasant mosquito borne virus has arrived in northern Europe and consider whether climate change might be to blame. All that plus your emails and WhatsApps, language pedantry and an ewaste dating service. Presented by Marnie Chesterton Produced by Ben Motley, with Margaret Sessa-Hawkins, Alex Mansfield and Sophie Ormiston