Guardian: The world should dump the “inefficient and ineffective” Kyoto protocol and replace it with a global carbon tax, leading economist William Nordhaus said yesterday. “To bet the world’s climate system on the Kyoto approach is a reckless gamble”, he told the climate change congress in Copenhagen. “Taxation is a proven instrument. Taxes may be unpopular, but they work. The Kyoto model is largely untested and the experience we have tells us it will not meet our objective — to stablise the …