Is time running out for powerdown? Many climate policy professionals and climate activists are now reassessing whether there is anything more they can do to help prevent the global catastrophe that climate change appears to be. The passing of the symbolic 400ppm CO2 level certainly has seen some prominent activists getting close to a change of strategy. As the Transition Town movement founder and permaculture activist Rob Hopkins says, the shift in the mainstream policy circles from mitigation to adaptation and defence is underway (i.e. giving up).