It’s not going away any time soon. There’s currently 2 to 3 times as many humans as what would be long term sustainable with the way that we live. That means that it’s going to be a problem for at least many decades, but more likely a few centuries. It’s definitely not yesteryears problem. And sustainability should always remain a concern, in everything that we do. Many countries (not the USA obviously) are already taking steps to be more sustainable, but it’s baby steps compared to what is needed.