A visitor takes photographs of solar moduls in the new solar power park in Lieberose, near Cottbus, eastern Germany, Thursday, Aug. 20, 2009. The solar modules were installed on a former military training area. (AP Photo/Eckehard Schulz)?

Costs Down, Profits Up: Green Energy Looking Good, Says UN

‘A long-term shift in investment over the next few decades towards a cleaner energy portfolio is needed to avoid dangerous climate change’