Kalk Bay Books is an independent bookstore outside Cape Town that regularly invites authors to speak about their latest book projects. This month, they hosted science writer Leonie Joubert to speak about her podcast The Psychonauts, a serialised audio-book project which she's release chapter by chapter as the book unfolds. Leonie sat in conversation with medical doctor Rene Usdin to talk about research in the field of psilocybin-therapy, and the changes of mainstreaming it in South Africa.