[digler999]

> now sold in blow-molded plastic was in glass or aluminum back then.

and how much "greener" is it to use aluminum, whose cost is mostly due to the energy required to separate it from its oxide, than to use plastic that is a natural (yes, it comes from the earth) byproduct of oil production?

> more of the waste was in the form of of cars dumped down ravines,

that can percolate down into the waterways and ground water, versus dump in a landfill with a 4ft clay liner specifically designed to catch contaminants.

Trash-to-energy is also a thing now. Plasma from an electric arc can (somehow) incinerate trash without harmful byproducts and actually results in a surplus of energy [1]. Not to mention methane recovery from landfills that's been a thing for over a decade [2]

[1] https://en.wikipedia.org/wiki/Waste-to-energy

[2] https://en.wikipedia.org/wiki/Landfill_gas_utilization