Pope Benedict XVI has been in trouble recently for lifting the excommunication of a bishop who is a Holocaust denier. So it may be refreshing to hear news of the papacy's more enlightened side. Last November the Vatican activated an array of 2,400 photovoltaic panels on the roof of the Nervi Hall, where the pope holds general audiences, and announced that it was developing a plan to become an exporter of renewable energy. Fiat Lux.




