BBC NEWS | World | Europe | Vatican installs solar panel roof

BBC NEWS | World | Europe | Vatican installs solar panel roof: "Pope Benedict XVI has become the first pontiff to harness solar power to provide energy for the Vatican.

Roof tiles on the Paul VI auditorium - used in poor weather for the Pope's weekly audience with pilgrims - are being replaced by 2,700 solar panels.

The photovoltaic cells will convert sunlight into electricity, generating enough power to light, heat or cool the 6,000 seat hall, engineers say."