billion per year depending on the case. Outcomes from U.S. policies depend on mitigation effort abroads, and simulations are …The MIT Emissions Prediction and Policy Analysis model is applied to synthetic policies that match key attributes of a … factor of four by 2050. Welfare costs vary from near zero to less than 0.5% at the start, rising in the most stringent case …

In the absence of significant greenhouse gas (GHG) mitigation, many analysts project that atmospheric concentrations of … investments in efficiency and alternative energy sources would entail significant costs. Resolving how these additional costs …