> As for global warming? Infrastructure, business and homes are amortized at 30yrs or less. Maybe up to 50yrs for very large civil projects. I don’t understand

> As for global warming? Infrastructure, business and homes are amortized at 30yrs or less. Maybe up to 50yrs for very large civil projects. I don’t understand this comment. I assume you’re not talking about financial amortization. Do you mean the climate impact of new construction (such as 1 ton CO2 per 1 ton concrete) has some kind of sunset period?