New Scientist said:
Did a deep freeze spur our ancestors to get cooking? The discovery that the oldest pots in the world were made in China around the time of the Last Glacial Maximum suggests that might be the case.
Hundreds of fragments of pottery have been found since the 1960s in Xianrendong cave in south-east China
Ofer Bar-Yosef of Harvard University and colleagues excavated the cave again in 2009 and, for the first time, used radiocarbon dating to work out the age of the layers where the pottery shards were found. The oldest ones turned out to be between 19,000 and 20,000 years old.