Yes, absolutely. Put enough money into it and scientists/startups will figure it out. I'd like to see someone prove that we can't reverse most of what we've done (besides extinction of different species which is obviously bad).
I don't think that's the only fix we need though, we'd also need a way to clone and rebuild lost species like penguins and polar bears, and micro organisms, fauna, ocean creatures, etc...
Reforestation on a grand scale and global outlawing of Amazon Forest depletion would be a wise thing as well... I think there are science-based solutions but I'm at a loss of how we begin researching and implementing anything esp. w/ our polarized politics of late that could give a shit.
I guess when it hurts bad enough we'll stop putting bandaids on things and really try to fix stuff, especially when the entire fate of mankind lies in the balance, until we get to that point sadly it'll probably keep going the way it has been.
And regarding the public, the public has plenty of reasons to be skeptical. We've been given Iraq WMDs, Obama birth certificate hysteria (more people believed this than you think), now Russia/Trump hysteria. All of this ends up being hot air. So when you tell people they have 10 years to live if we don't do a 180 on our economy, what do you expect them to say?