technologies which reduce the cost of pollution abatement. The innovating firm can patent this innovation and use a licensing fee … to generate revenue. In a world of certainty, the first best level of innovation and abatement can be supported by either … a pollution tax or a marketable permit. However, the returns to the innovator from innovation are not the same under the …

As an empirical example of this externality, we analyze the innovation induced by the obesity epidemic. Obesity is … associated with an increase in the incidence of many diseases. The induced innovation hypothesis is that an increase in the … incidence of a disease will increase technological innovation specific to that disease. The empirical economics literature has …