Scientists in Russia have grown plants from fruit stored away in permafrost by squirrels over 30,000 years ago.
The fruit was found in the banks of the Kolmya River in Siberia, a top site for people looking for mammoth bones.
The Institute of Cell Biophysics team raised plants of Silene stenophylla – of the campion family – from the fruit.
Writing in Proceedings of the National Academy of Sciences (PNAS), they note this is the oldest plant material by far to have been brought to life.
Prior to this, the record lay with date palm seeds stored for 2,000 years at Masada in Israel.
The leader of the research team, Professor David Gilichinsky, died a few days before his paper was published.