It's a massive concern, and like everyone else, I worry about my descendants, those I have now, and any future ones. Although we can all individually take tiny steps, the situation needs a huge, collective approach, as in worldwide collaboration. We need someone to step up and set the ball rolling. I don't think current leaders fit the bill.
My tiny step is to stop buying things that I don't need. Very recently, while looking at photos taken over twenty years ago, I noticed that I was wearing clothes that are still in my wardrobe and drawers - including a number of St Michael garments. At 72, I probably could manage without buying very much during the rest of my life. I'll try.