Science teacher, activist, and mother of three, Fiona McCrossin has been swept up in AUSMAP, the new citizen project from TEC which is mapping and analysing plastic on our beaches to help build solutions. She talks to Ruth Hessey about how she became aware of what the UN recently identified as the greatest threat to the planet currently facing us - and how that has affected her teaching career. For more info visit the AUSMAP website. To listen to our weekly radio program check out Monday Drive on 89.7 fm every Monday 4-6pm.