Reuters: France is building the world's first wind farm with turbine blades designed to minimize interference with radar systems, using technology partially inspired by stealth warplanes. EDF Energies Nouvelles, the renewables unit of state-controlled utility EDF, aims to install the new Vestas-built turbines next spring in the "Ensemble Eolien Catalan" wind farm near Perpignan and start operating them over the course of 2015. "It is a world premiere for this new technology," an EDF EN spokeswoman said....