Unlike oil and coal, which are compressed forms of energy, renewable energy requires unusually large land areas. This article calculates the consequences of a switch to hydrogen-cell vehicles powered by electricity from wind turbines. It then re-does the calculation for three other green energy...

For knowledge-intensive goods, foreign trade performance also depends on the quality of the technology. Important factors to consider are technological capa-bilities, various market factors which influence the chances of a country devel-oping a lead-market position, innovation-friendly...