Plants that were frozen during the "Little Ice Age" centuries ago have been observed sprouting new growth, scientists say.
Samples of 400-year-old plants known as bryophytes have flourished under laboratory conditions.
Researchers say this back-from-the-dead trick has implications for how ecosystems recover from the planet's cyclic long periods of ice coverage.
The findings appear in Proceedings of the National Academy of Sciences.
They come from a group from the University of Alberta, who were exploring an area around the Teardrop Glacier, high in the Canadian Arctic.