Jack is joined by new co-host Joanna Ward to discuss scientific hoaxes online, the annoying trend of "viral" Twitter, Facebook and Instagram accounts that steal science images, and why parachutes will save you from falling out of a plane even though they haven't been tested "scientifically", while Jargonauts gets a rush from "endorphins". 

Plus: Joanna's heart research, Melbourne International Comedy Festival shows by friends of the show, and the dodgy science in the upcoming Scarlet Johansson movie "Lucy".