The paper combines an economic-geography model of agglomeration and periphery with a model of species diversity and looks at optimal policies of biodiversity conservation. The subject of the paper is natural biodiversity, which is inevitably impaired by anthropogenic impact. Thus, the economic...

This paper examines the effectiveness of sub-national actions to control a novel disease, such as Covid-19, in the absence of a national policy. Evidence is emerging that countries where sub-national governments have undertaken unilateral social distancing measures to combat the pandemic with...

This paper looks at a model in which two countries trade agricultural and manufactured commodities. The manufactured-goods sector produces with increasing returns to scale under conditions of monopolistic competition. It is shown that an increase in land endowment (or an increase in agricultural...