Back in 2015 we were ever so lucky and got to interview Australia's Doctor Karl Kruszelnicki - "Doctor Karl". He told us about climate science, why Arabella's going to live to be 5,000 years old, and why oral sex makes you deaf. Sustainababble is your weekly podcast about the environment, with jokes. Music by Dicky Moore from Bearcraft and Dream Themes. Available on iTunes, Stitcher, Soundcloud, Acast, and all other good hosts. Visit us at @thebabblewagon and at Facebook.com/sustainababble. Our site is www.sustainababble.fish.