Joanne Howarth wants to fleece the polystyrene packaging industry. The Sydney entrepreneur is on a mission to replace those annoyingly-everywhere beads and other squeaky packing material made from oil or methane with something more environment-friendly: wool. Natural health company Blackmores is among the companies interested in the idea.

Howarth is the first subject of our new podcast series, Tech Zero, which explores some innovative ideas that will help Australia get to net zero emissions, and make money doing it. Listen below on Apple, Spotify, Google, or search for Tech Zero wherever you get your podcasts. Episodes are out every Thursday, starting today.