Science View S2013E32 - Secrets in the Lake Sediment

A major discovery that could call for history books to be rewritten was made in a small Japanese lake, Lake Suigetsu. By some miracle, this lake combines a number of features that have allowed its sediment to preserve 70,000 years' worth of data. And it is accurate to within plus minus 30 years per 10,000 years! This is far more accurate than carbon dating. A major global warming theory based on ice core monitoring may also be revised. We spotlight the cutting-edge research on this miraculous lake.