Cold conditions may not have been responsible for the centuries-long pause in the spread of farming across south-eastern Europe during prehistory, according to a new study by the Leibniz-Zentrum für Archäologie (LEIZA) in Germany, published in the journal Proceedings of the National Academy of Sciences. Researchers found no evidence of extreme cold at the Greek archaeological site of Franchthi, nor any statistically significant link between local temperature fluctuations and changes in how people obtained their food.