This paper presents a simple model of optimal sustainable growth in which the environmental stock enters consumers' preferences and production possibilities depend upon the use of produced physical capital and the use of a flow of productive services provided through the exploitation of the...

The models of Lucas (1993), Krugman (1987), Stokey (1988, 1991) and Young (1991) predict that productivity growth is associated with the production of increasingly sophisticated products, and that high-end goods should exhibit more productivity growth than low-end goods. This paper investigates...

Although trade liberalisation has been linked econometrically and through casual empiricism to large income increases, attempts to quantify its impact in static simulation models have shown small estimated gains. This paper shows that when the endogenous dynamic effects of trade liberalisation...

Having grown faster than world GDP since the 1950s, international tourism is today one of the most important tradable sectors, with expenditure on tourist goods and services representing some 8% of total world export receipts and 5% of world GDP. Starting from a broad perspective, two main facts...

This paper explores the trade-off between economic growth and environmental quality along two paradigms of endogenous growth theory: variety expansion (HIP) and quality improvements (VIP). We compare the policies that match the decentralised economies' paths with the optimal "strong sustainable"...

In this paper, the expansion of private production erodes the quality of commonly owned goods, thereby forcing individuals to rely increasingly on private goods to satisfy their needs. In the face of this deterioration, households keep their labour supplies and saving rates relatively high in...

A model of ecologically sustainable endogenous growth is presented, in which environmental quality has a positive influence on individual welfare and on the productivity of capital. The effect of different environmental policies on the long-run growth of the economy is studied in the framework...

In this paper we build an endogenous growth model where human capital and ideas are complements in the long-run equilibrium and technological progress takes the form of a continuous increase in the number of horizontally differentiated varieties of intermediate inputs. One peculiarity of the...

Using a vertical differentiation model of endogenous growth with stochastic R&D activity, we characterise the optimal patent lifetime a government would set in order to maximise economic growth. We show that a finite patent lifetime does exist and is unique provided that the expected rate of...