Perhaps we can’t turn it all around. In a basic sense some rise in planetary temperature is inevitable, so do we roll over and accept our fate? One group of people believe we must spend whatever money we have on policies that can only promise a minimal impact at best. Another says something along the line of “if you can’t cure climate change, then let us mitigate against its most harmful effects, working on technologies with the time we buy ourselves”. The former dominated the conversation, I’d like to look a bit more at the latter.