This paper presents a simple two-period overlapping generation's model with uncertain lifetimes that contains environmental and health issues. It investigates an intergenerational conflict between old and young generations as regards two defensive expenditures, offsetting the influence of a...

New infrastructure projects may affect CO2 emissions and, thus, cost benefit analyses for these projects require a value to apply for CO2. This may be based on the marginal social cost of emissions or on the carbon price resulting from present and future policies. This paper argues that both...