By Ben Tavener, Contributing Reporter
RIO DE JANEIRO, BRAZIL – A makeshift gas fitting may have been behind the explosion at the Filé Carioca restaurant on Thursday morning in Praça Tiradentes, downtown Rio, which left three dead and many more injured. A length of hose lashed to a gas cylinder value by duct tape was found by contractors sifting through the rubble of the building housing the restaurant, which was completely destroyed . . .