Reuters: Carbon prices and the speculators who trade the underlying emissions permits should remain unregulated, despite wild volatility in the nascent market, a panel of emissions traders said on Friday. Prices for European Union carbon permits traded under the 27-nation bloc’s $92 billion emissions trading scheme have fluctuated wildly, touching a 2-year high of 30 euros ($42) last July before dropping to record lows of 8 euros in February. “It’s tempting to regulate prices, but it …