A climate guru rebukes his mates on cap and trade.
...Mr. Hansen also had the honesty to follow his convictions to their logical conclusion, while reproaching his followers -- President-elect Obama among them -- for not doing the same. To wit, Mr. Hansen endorses a straight carbon tax as the only "honest, clear and effective" way to reduce emissions, with the revenues rebated in their entirety to consumers on a per-capita basis. "Not one dime should go to Washington for politicians to pick winners," he writes.
The risks of fossil fuels remain speculative, but if they really are the apocalypse of Mr. Hansen's prophecies, then the cleanest remedy is a tax. That would raise energy and all other prices as the incentive for new technologies and investments. But a tax would be neutral, eliminating the market distortions caused by subsidies and regulation, and the proceeds could be used to offset other taxes. The transition to a world in which growth is not tied to carbon would still be long and extremely expensive, but a tax would be the least painful way to get there.
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