Recycling can reduce the pressure, counterbalancing diminishing density and ore grade. No fossil fuel can be recycled. When efficiency (gain/impacts, net ener

Recycling can reduce the pressure, counterbalancing diminishing density and ore grade. No fossil fuel can be recycled. When efficiency (gain/impacts, net energy gain...) declines being able to use a then-better substitute is key. This becomes more and more true for renewables, not for fossil fuels.