For several decades the life of Professor Tim Flannery has focused on the natural environment, his passion for nature drawing him to become involved in combating the environmental damage resulting from the world’s over-reliance upon fossil fuels. A new documentary sees Dr Flannery searching out for examples of leadership in the face of the international climate emergency that imperils the nation and the entire world. Stephen Hill spoke to the director of The Climate Changers Johan Gabrielssen that premiers at the Sydney Film Festival.