I mean... I am just a random internet person but I've spent a great deal of money to make my commute not use a single drop of gasoline. My house also is a net positive in energy production. It'll take a while to offset the production of the items I had to buy but I have a horizon of a couple of decades - and they'll be recyclable afterwords.
More to the point though is it isn't A) US has to fix itself or B) the developing world needs to be mindful of how it develops - it's both. It's perfectly possible to be "Holy shit guys, the US needs to change how it consumes!" and be like "Holy shit, the developing world needs to change how humans have developed historically!" Hopefully, we'll get back on track in 2020 nationally on A...
I can only make changes by being politically active and making environmentally sound decisions myself/encouraging others. I do these things, but don't have the power to force systemic change.
It looks like the Brazilians are doing a better job at that than you are. All I'm trying to say here is we aren't really in a position to wag the finger at anyone. Least of all the people of Brazil.
