Irrepressible host Costa Georgiadis and his offsiders get their hands dirty as they meet some groundbreakers leading the sustainability charge in Australia. There’s Joost Bakker, a bloke who’s had more career changes than most, including restaurateur, artist, architect, florist, builder and ecoentrepreneur. His latest project involves creating a zerowaste future, and practising what he preaches at home, in his garden and at his work. He built a house that was completely recycled. His wall of more than 1000 terracotta pots is awesome. Then there are his pop- up sustainable cafes, where the only waste is compost.