This paper introduces endogenous and directed technical change in a growth model with environmental constraints. A unique final good is produced by combining inputs from two sectors. One of these sectors uses "dirty" machines and thus creates environmental degradation. Research can be directed...

The environmental sector is supposed to yield a dual benefit: its goods and services are intended to help to tackle environmental challenges and its establishments should create new jobs. However, it is still unclear in empirical terms whether that really is the case. This paper investigates...

Ökologisch denken und handeln heißt inhaltlich, den notwendigen und möglichen Frieden des Menschen mit der Natur zu wahren. Politisch und wissenschaftlich denken und handeln stiftet dagegen vielfach Unfrieden mit der Natur. Noch nie war die Fähigkeit des Menschen zur Beeinflussung und...