We develop an optimizing model of a farm that is subject to invasion by an infectious disease such as bird flu, where the probability of invasion depends on the degree of free-ranging on the farm and post-invasion rate of spread on the farm depends on the farm size, the farmer's surveillance...

We examine the potential for further reform of sales tax and tariffs on final goods and on intermediate inputs in Pakistan. Analysis is conducted at two levels. First, optimal taxes are computed under the assumption that tax revenue is exogenous and pays for a public good, and these are compared...

We construct a two-country model where pollution from production is transmitted across borders. Pollution abatement is undertaken sequentially by private producers and the public sector. We characterize the Nash optimal levels of the policy instruments in the two countries: emission taxes and...

In this paper, the effects of a transfer on the intertemporal terms of trade are examined in the context of a simple two-country, two-period model. When intertemporal trade occurs because the two economies have different rates of time preference, a transfer improves the terms of trade of the...

We develop a two-country model of foreign aid and cross-border pollution resulting from production activities in the recipient country. There is both private and public abatement of pollution, the latter being financed through emissions tax revenue and foreign aid. We characterize a Nash...