What is all this fuss about blue light? You've probably heard about it having something to do with the backlighting on your smartphone or other electronic device. But what actually is blue light? What's it doing to your brain? Is it really that bad? In episode 20, Aleena and Janine are keen to see what the science says. They also have the final installment of the ever-popular segment: How's Aleena's Kitchen Renovation Going?!; Janine's holiday nerdery; plus gushing over Björk's new album AND podcast! OMG!

Full show notes at the Sister Doctor Squared website.

Mastering of this episode, plus Intro and Outro music by Dr Adrian Diery.