It is commonly understood that the average global temperature should not be allowed to rise above two degrees Celsius by comparison with pre-industrial times. According to many scientists, a higher rise would be catastrophic for the human species. Therefore, this is the official target of current Paris climate talks. However, ever more countries participating in the negotiations now argue that this target is way too high, for they are already suffering from the ravages of climate change. Thus they want to lower it by half a degree to one degree and a half Celsius. The growing acrimony is dominating the latest news. Apparently, the climate deal is under a serious threat. After a quick look at the news, one does not know whether to laugh or to cry. Half a degree! Amazingly, it is now believed that the target of two degrees Celsius is well within reach. With some effort, the common story goes, the human species could get there before it would be too late. In the meanwhile, the average global temperature has already risen by one degree Celsius compared to pre-industrial times. In other words, we are only half a degree from the new and tougher target. Half a degree? Ah, it is better to laugh then to cry. After all, what is the human species for?