We study the optimal R&D trajectory in a setting where new technologies are never perfect backstops in the sense that there is no perfectly clean technology that eventually solves the pollution problem once and for all. New technologies have stings attached, i.e. each emits a specific stock...

We analyze the nature of research and development (R&D) that leads to Schumpeterian economic growth in a region that is creative in the sense of Richard Florida. The engine of economic growth in our creative region is process innovations that lead to quality improvements in the machines that are...

We analyze the nature of research and development (R&D) that leads to Schumpeterian economic growth in a region that is creative in the sense of Richard Florida. The engine of economic growth in our creative region is process innovations that lead to quality improvements in the machines that are...

"Learning-by-doing" is usually identified as a process whereby performance increases with experience in production. The paper investigates different patterns of "learning by doing", studying learning curves at product level. Cost-quantity relationships differ a lot across products belonging to...