Take a walk on the mild side with Rif and Jesse on this XL episode as they explain why Australia was in dire need of a marine microbe census, how every touch of your smartphone screen gives you away, the liquid water lake (what!?) on Mars, and finally, chat with Dr Brenda Lin about sustainable living, resilient cities, and the loss of nature from our lives. Learn more about the stories on the Interronauts blog, here. Enjoyed the show? Give us a rating on iTunes or tell your friends about Interronauts, the CSIRO podcast. Send us a message or follow us on Facebook | Follow us on Twitter | Instagram | Or send us an email: socialmedia@csiro.au.