UPPER LAKE, California — A massive wildfire in Northern California has torched more than 1,000 homes in and around the city of Redding, authorities said Wednesday as some evacuees were allowed to return home. The California Department of Forestry and Fire Protection said another 440 buildings, including barns and warehouses, have also been destroyed by the fire, which is now the sixth most destructive in California history. The huge Redding-area blaze, which started July 23, forced 38,000 people from their homes and killed six.