We compare consumer valuations of beef ribeye steaks from cattle produced without growth hormones or genetically modified corn in France, Germany, the United Kingdom, and the United States. Results suggest that French consumers place a higher value on beef from cattle that have not been...

CO2-emissions from traffic - increasingly from freight transport - are growing, especially in the highly developed industrialized countries. The answers to this environmentally problematical development are technical ones mainly: Administrators and scientists try to improve engines,...