ScienceDaily: Keeping tropical rain forests intact is a better way to combat climate change than replacing them with biofuel plantations, a study in the journal Conservation Biology finds. The study reveals that it would take at least 75 years for the carbon emissions saved through the use of biofuels to compensate for the carbon lost through forest conversion. And if the original habitat was carbon-rich peatland, the carbon balance would take more than 600 years. On the other hand, planting …