I just remembered, as I put a drinks can in the recycling, that in the 1980s, when I was at school, we were told by teachers to crush cans before putting them in the rubbish bin, because that reduced their size in landfill.
That, for the record, was 1980s environmentalism!
We had “bottle banks” where we could recycle our glass – one for clear, one for green, and one for brown, or mixed colors. But that was the only recycling available. And now you can recycle everything except oily paper, and some plastics!