The Organization of the Petroleum-Exporting Countries (OPEC) faces a perfect storm. It is squeezed between the revolution in unconventionals, which has increased the global supply of hydrocarbons and lowered their price, and the prospect of a global peak in oil demand, stemming from climate...

The favored federal policy to address climate change is a domestic cap-and-trade system. However, a vocal minority of political leaders have begun arguing in favor of a carbon tax. Carbon taxes seem particularly attractive both for fiscal reasons and because they provide certainty over the price...