NYSE Euronext is the latest exchange to delve into emissions trading by listing CO2 allowances and credits. The exchange will begin trading spot contracts but will later develop a futures market, the exchange said.The plans follow recent announcements by Eurex that it will enter commodities via emissions in its tie up with European Energy Exchange (EEX) and Intercontinental Exchange (ICE), which entered an agreement with European Climate Exchange (ECX) to list emission contracts late last year (see FO Week 02/01/06). The exchange was cagey about the new...