Coal is a cheaper and more easily used energy source than the alternatives.

Markets are tools that, relative to the alternatives, happen to have great strengths with respect to incentives, efficiency, and innovation.

Disaggregating some of the information in the chapter on alternatives would improve the text for example, the issue of health should be treated as a separate item.

While any plan will involve pain for citizens, the markets must deem the pain politically tolerable, at least relative to the alternatives.

While global warming is a serious challenge (and will exacerbate other problems), cutting carbon emissions is a poor solution and a poor use of funds compared to the alternatives.

PDP, however, had also always maintained that Puerto Rico residents should have an opportunity to choose among the available options for self determination, and therefore did not oppose maintaining the other alternatives, namely, statehood and independence.

It is cheap because it is plentiful. It is easier to use than wind or solar power because it can produce electricity around the clock, without reliance on weather conditions.

At the same time, the group adds, we must recognize that we won t make any real progress in cutting CO2 emissions until we can provide developing economies with affordable alternatives to the fossil fuels on which they currently depend.