War seems to be the only endeavor Americans feel good about, presumably because of our "success" in WWII, but in spite of all the subsequent examples.  Hence the War on Poverty, the War on Hunger, the War on Cancer, the War on Drugs and the War on Terror -- all of which, IMNERHO, fell into the "embarrassing failure" category.  Religious beliefs resist mere evidence, and War is an American religion.  

Now we have to look forward to a War on Climate Change, and for once the metaphor may be apt:  if not faced squarely, climate change will kill us all; and we can only defeat it by cooperation on a level we only relate to as a "War Footing".   Okay, what's the first thing an entity "at War" needs?  An Army!   And how does one reliably raise an Army?  With a Draft!   Imagine a transition to mandatory universal public service -- not just for post-teens, but for everyone this time.  Whoever you are, whatever your abilities, you either spend one day a week tackling a necessary task for free, or work full time for a soldier's salary on something you're good at.  Perhaps each of us can pick our task from a list of essential tasks assembled by committees of climate experts.  There will be no shortage of political disputes over what goes on the list, so "situation normal...".  

Unfortunately, no government on Earth is yet ready to take this "War" seriously, because no electorate is ready to demand it.  So those who agree that immediate action is needed might form a volunteer "militia" analogous to the French Foreign Legion, except with the goal of saving the world rather than killing people who dared resist the might of France.  Let's call them "World Climate Legionnaires", each of whom commits to devote at least one day per week to whatever they are good at that helps mitigate or reverse global warming.  Once commitment exists, organization will become necessary, and out of that need may arise an organizational structure that can later be made official as electorates join the Legion and elect governments to manage and consolidate it.  

I'm ready.  Who wants to join me?