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A look back at ‘An Inconvenient Truth,’ 20 years later | Al Gore’s famous documentary has mostly stood the test of time.
(yaleclimateconnections.org)
Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:

How much each change to the atmosphere has warmed the world:

Recommended actions to cut greenhouse gas emissions in the near future:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.
seriously. no 911 (clinton administration had alkaida on their radar and begged bush/cheney to take them seriously and they properly did their role of being the central point of information without the patriot act) and the us being a leader in environmental concerns. imagine the milenium opening with continued peace and a decade concentrating on renewables and efficiency. Would not be surprised if it had been somewhat of an infrastructure type thing like biden and you know another stab would have been taken at healthcare. I could see bernie influencing him during his time. Its funny because I was someone plugged into environment things but until his movie I was really not plugged into gloal warming. As myself and other like minded doomers like to mention even if global warming were entirely fixed we still have all sorts of environmental disasters on our hand with poisoning of earth, air, and water.
That's optimistic. People only learn from failure. Jingoists would have framed Gore as weak (like Carter) for letting 911 happen and not replying with a rampage, later to have gone on stupid wars anyway. People only remember the failures, not what was done right and managed right in the background for them.
I really don't think it was. This is a very well known point of contention clinton administration vs bush/cheney administration. They still were cold war russia focused and clinton was terrorist focused. Its like the 911 report. You read it and its very obvious all they had to do was make cockpick access external and not have direct access to the passenger area. Instead we got the patriot act and security theater. The book is there and anyone can read it but it was long and non readers just won't.