This study investigates the price linkage among the US major energy sources, considering structural breaks in time series, to provide information for diversifying the US energy sources. We find that only a weak linkage sustains among crude oil, gasoline, heating oil, coal, natural gas, uranium...

Porter hypothesis suggests tougher environmental regulations could spur technological growth, leading to an increase in productivity of market outputs, simultaneously providing greater environmental protection. This study tests the Porter hypothesis in US agriculture using state level data from...

This study intends to understand how disaster is related to countries' production efficiency using a sample of 137 countries over 1980 - 2011. We analyze the effect of the number of man-made and natural disaster occurrences on countries' technological change (swift of the frontier) and...