“The second attempt happened at Roswell in 1947, when we sent a manned mission. For many years prior—our reconnaissance craft—called ‘flying saucers’ by the Earthlings—were blocked and harassed by them, and our signals were ignored. But at Roswell, we were able to capture a human specimen (later released unharmed) and gathered valuable information, to which I shall return presently. We lost a few of our crew before they could attempt communication, though the complete details were never publicised by the Earthlings. “Our observations of the Earthlings also revealed their violent nature and war-like tendencies, with the recent two centuries being of intermittent but catastrophic warfare. However, an encouraging development from about 75 years ago was the formation of several global organisations, which we expected would evolve into some form of planetary government. Sadly, not so. On the contrary, global fora, on the whole, have lost whatever little clout they had, and individual nations are more inclined to follow their own narrow interests. We studied four Earth regions very closely—India, China, Europe and the United States. The first two have been highly-populated regions for thousands of years, so, clearly, they possess some very desirable features for humans. The latter two are the most prosperous and technologically advanced, and so should be—we expected—the most alive to existential threats to their future, especially in the face of increasingly frequent adverse weather events. Again, we were disappointed. All these regions seem consumed with serious internal issues, and their relationships with each other are complicated enough to make a collective and credible human response to climate change a very difficult task.