Multi-gas approaches to climate change policies require a metric establishing equivalences among emissions of various species. Climate scientists and economists have proposed four classes of such metrics and debated their relative merits. We present a unifying framework that clarifies the...

One of the distinguishing features of the civil aero-engine market is its highcompetitiveness. The costs and risks associated with new projects are such that thedifference between two apparently equally attractive options could result in success fromone and a threat to the survival of the...

The purpose of this study is to investigate the temporal aspects of the social cost of greenhouse gases (GHGs). I am particularly interested in the interaction between time of emissions, discounting, and type of GHG (where different GHGs have different atmospheric lifetimes). I show graphically...

Since the mid-1980s, the international community has controlled refrigerants that may damage the ozone layer and cause climate change based on several international agreements. In particular, the Montreal Protocol contributed to not only solving the ozone layer depletion problem but also...

Die geologisch verfügbare Menge an Metallen wie Kupfer wird kontrovers diskutiert. Die Rohstoffpolitik sollte sich besser am eigentlich einschränkenden Faktor, der erforderlichen Energie zur Rohstoffbereitstellung, statt an dieser spekulativen Diskussion orientieren. Dazu ist ein Verständnis...

Part I: Global Perspectives -- Chapter 1. Sustainability and a Planetary Diet -- Chapter 2. Climate and Food -- Chapter 3. Food and Environmental Emergency -- Chapter 4. Reducing Food Waste and Packaging -- Part II: Industry and Marketing Perspectives -- Chapter 5. Circular Agriculture --...