Do wind turbines provide an affordable means of harnessing a limitless source of clean power, or are they inefficient blots on the landscape that devastate birdlife and are more likely to exacerbate than reduce CO2 emissions?
Costing over $1 billion, the Karahnjukar hydroelectric dam in Iceland is a hugely controversial project. Mark Lynas journeyed to the blasting face, hoping to work out for himself whether this industrial elephant is green or brilliant-white.
