A second Viking site may have been identified in the New World, on Canada’s Baffin Island. Archaeologist Patricia Sutherland of Memorial University in Newfoundland and Scotland’s University of Aberdeen returned to Tanfield Valley, located on the southeastern coast of the island, where a building made of stone and sod was unearthed in the 1960s. She […]

Carbon dating of organic materials from archaeological sites has been calibrated for the variations in the amount of carbon-14 in the atmosphere against the known ages of tree rings since the 1960s. Tree rings provide a record that dates back about 14,000 years. Corals have also been used to try to calibrate the clock further […]