Probably because science is like a vehicle, it all depends on the driver. And if humanity hasn’t gotten its shit together in the first place, we’re basically the stupid driver. If we want our sciences to try and do any of that, we better start investing in it. Real investing, and not even as much as our military receives but just enough to get these jobs done and have room for the future.
People love to ask why isn’t science efficient enough to rid us of these problems. The funny thing is it can. But not as some entity on its own, it needs the help and support of the driver/ us to get there.