Aside for its length, it’s amazing to me how much Sagan models the archetypal scientist warning from a disaster movie. At the end, he essentially – but in very calm terms – warns the US congress that for the next generation to avert catastrophe, we will need to find a global consciousness that supersedes our petty tribal grievances.
And as a reminder that climate change shouldn’t have become a party political issue, here’s Margaret Thatcher’s address to the UN General Assembly in 1989, which she dedicated to climate change and the need for concerted international interventions by government to halt. https://www.youtube.com/watch?v=VnAzoDtwCBg