CNN: By any measure, it is a long way from the Park Avenue headquarters of JPMorgan Chase, the global investment bank that generated revenues of $100 billion last year, to the dusty streets of Kampala, Uganda, where a poor woman can buy a new cook stove for about $6. What connects the big bank to that small transaction is the business of carbon trading. JPMorgan (JPM, Fortune 500) is quietly pushing the boundaries of the carbon market – a sprawling international experiment to reduce …