I learned about the existence of the International Atomic Energy Agency. As Professor Goodman and Lord Rees noted, the youth tend to be pretty pessimistic about the shape of things, so I was pleasantly surprised to find the wikipedia page for the IAEA doesn't have a controversies tab, and the criticism section is relatively very mild. So it is rather hopeful that there's this fairly successful international regulatory agency. Of course not to the degree of mobilizing all of humanity in the saving of ourselves from climate change. I do appreciate the bright spot, though I fear later that I will mention the International Atomic Energy Agency to someone and they'll tell me how it's a CIA psy-op or colonialism or designed to prevent some specific people from having nuclear power. There's that characteristic youthful pessimism.
In that same vein I wish Martin Rees would have been more forthcoming with regards to how we redistribute wealth. Also, why are so many of the people most concerned with the future (e.g. "longtermists," the effective altruism movement, Nick Bostrom) seemingly relatively unconcerned about pressing problems right now? What is the principle motivating our attitude towards the future? For Martin Rees, what ought to be the underlying principles which guide us through the coming turbulent decades?