Most US federal environmental policies allow states to assume responsibility for implementation and enforcement of regulations; states with this responsibility are referred to as “authorized” or having “primacy.” Although such decentralization may have benefits, it may also have costs...

The promotion of US energy efficiency policy is seen as a very important activity by the Energy Information Agency (EIA). Generally, the level of energy efficiency of a state is approximated by energy intensity, commonly calculated as the ratio of energy use to GDP. However, energy intensity is...

This paper looks at the impact on Australia’s trade in crops (non-wheat grains and oilseeds) where GM technology has been introduced. The model includes assumptions about the productivity gains of GM crops, possible consumer responses and regulatory costs for Australia and its major trading...