I have to add that there is (informally) even smaller purple team, which thinks that climate change could happen sooner and in more violent form, like runaway global warming. The idea has similarities with the idea of self-improving AI as in both cases unstoppable process with positive feedback will result in human extinction in 21 century.
Link doesn’t seem to be working: http://reason.com/blog/2017/07/06/red-teaming-climate-chang1
I have to add that there is (informally) even smaller purple team, which thinks that climate change could happen sooner and in more violent form, like runaway global warming. The idea has similarities with the idea of self-improving AI as in both cases unstoppable process with positive feedback will result in human extinction in 21 century.