By its own admission, Brazil, with its continual destruction of the Amazon rainforest, is not the worlds most environment-friendly country. Yet South Americas largest economy is cleaning up its act and making money at it too, pioneering the carbon dioxide credits market in the region. According to the Universidade Federal do Rio de Janeiro, Brazil could earn about $3 billion a year from 2012 in trading carbon credits by selling other polluting nations the right to maintain their emissions without facing heavy fines under the Kyoto Protocol. ...